A308180 - OEIS

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A308180

Main diagonal of triangle defined in A308178.

0, 3, 5, 2, 1, 6, 7, 11, 4, 12, 18, 14, 13, 8, 17, 9, 22, 23, 25, 29, 10, 28, 19, 30, 38, 31, 39, 15, 47, 24, 16, 40, 34, 42, 50, 51, 41, 44, 46, 49, 58, 55, 45, 21, 66, 69, 20, 56, 65, 60, 73, 67, 77, 57, 78, 63, 79, 70, 26, 27, 85, 87, 93, 76, 82, 89, 71

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OFFSET

0,2

COMMENTS

Theorem: This is a permutation of the nonnegative integers. [The proof is analogous to that for A286295.]

Conjecture: There is a unique fixed point at n=0, and the positive integers form one "cycle", namely (... 59 27 15 9 12 13 8 4 1 3 2 5 6 7 11 14 17 23 30 16 22 19 29 24 38 ...).

LINKS

Rémy Sigrist, Table of n, a(n) for n = 0..5000

CROSSREFS

Cf. A308178, A308179, A286295.

Sequence in context: A282194 A138508 A353712 * A329633 A126353 A094791

Adjacent sequences: A308177 A308178 A308179 * A308181 A308182 A308183

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, May 28 2019

EXTENSIONS

More terms from Rémy Sigrist, May 29 2019

STATUS

approved