The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A039834 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A039834

a(n+2) = -a(n+1) + a(n) (signed Fibonacci numbers) with a(-2) = a(-1) = 1; or Fibonacci numbers (A000045) extended to negative indices.
(history; published version)

#185 by Roman Stawski at Tue Nov 26 08:41:11 EST 2024

STATUS

editing

proposed

#184 by Roman Stawski at Mon Nov 11 13:57:48 EST 2024

COMMENTS

A Pisano period sequence (modulo m) will terminate terminates with (..., 13, -8, 5, -3, 2, -1, 1, 0). - Roman Stawski, Nov 11, 2024

Discussion

Mon Nov 11

13:58

Roman Stawski: Sorry !

19:49

Andrew Howroyd: You can avoid this problem by signing with ~~~~ instead of typing in your name and the date. The system converts 4 tildes (~~~~) to your user name and date, so that you should never need to type this in manually.

Tue Nov 26

05:19

OEIS Server: This sequence has not been edited or commented on for a week
yet is not proposed for review.  If it is ready for review, please
visit https://oeis.org/draft/A039834 and click the button that reads
"These changes are ready for review by an OEIS Editor."

Thanks.
  - The OEIS Server

#183 by Michel Marcus at Mon Nov 11 11:41:53 EST 2024

STATUS

proposed

editing

#182 by Roman Stawski at Mon Nov 11 11:39:46 EST 2024

STATUS

editing

proposed

Discussion

Mon Nov 11

11:41

Michel Marcus: plese remove comma from Nov 11,    (see other signatures)

#181 by Roman Stawski at Mon Nov 11 11:39:20 EST 2024

COMMENTS

A Pisano period (modulo m) will terminate with (..., 13, -8, 5, -3, 2, -1, 1, 0). - Roman Stawski, Nov 11, 2024

STATUS

approved

editing

#180 by N. J. A. Sloane at Sat Jun 22 22:38:22 EDT 2024

STATUS

proposed

approved

#179 by G. C. Greubel at Sat Jun 22 14:38:26 EDT 2024

STATUS

editing

proposed

#178 by G. C. Greubel at Sat Jun 22 14:38:18 EDT 2024

FORMULA

a(n) = Sum_{k=0..floor((n-1)/2)} A130595(n-k-1, k), for n >= 0. - G. C. Greubel, Jun 22 2024

#177 by G. C. Greubel at Sat Jun 22 14:37:38 EDT 2024

FORMULA

a(n) = Sum_{k=0..floor((n-1)/2)} A130595(n-k-1, k). - G. C. Greubel, Jun 22 2024

CROSSREFS

Cf. A000045, A001622, A038754, A011782, A055830, A130595, A215022, A215023, A343773.

STATUS

approved

editing

#176 by Michael De Vlieger at Mon May 13 00:06:51 EDT 2024

STATUS

proposed

approved