OFFSET
1,2
COMMENTS
Row sums are n^3+(n+1)^3 [A005898](1,9,35,91,189,...). - Vincenzo Librandi, Feb 22 2010
The even central polygonal numbers divided by 2 give the central column of the triangle. - Omar E. Pol, Aug 16 2011
REFERENCES
J. H. Conway, Personal communication, Feb 19 2010
LINKS
R. Zumkeller, Table of n, a(n) for n = 1..10000
EXAMPLE
1
3 2 4
7 6 8 5 9
13 12 14 11 15 10 16
21 20 22 19 23 18 24 17 25
31 30 32 29 33 28 34 27 35 26 36
43 42 44 41 45 40 46 39 47 38 48 37 49
57 56 58 55 59 54 60 53 61 52 62 51 63 50 64
73 72 74 71 75 70 76 69 77 68 78 67 79 66 80 65 81
CROSSREFS
KEYWORD
nonn,tabf
AUTHOR
N. J. A. Sloane, Feb 21 2010
STATUS
approved