

A129801


Triangle read by rows in which row m (m>=0) gives the numbers 2*m*n + 1 for n = 0, ..., m.


0



1, 1, 3, 1, 5, 9, 1, 7, 13, 19, 1, 9, 17, 25, 33, 1, 11, 21, 31, 41, 51, 1, 13, 25, 37, 49, 61, 73, 1, 15, 29, 43, 57, 71, 85, 99, 1, 17, 33, 49, 65, 81, 97, 113, 129, 1, 19, 37, 55, 73, 91, 109, 127, 145, 163, 1, 21, 41, 61, 81, 101, 121, 141, 161, 181, 201
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OFFSET

1,3


COMMENTS

Row sums are given by A053698 = n^3 + n^2 + n + 1.


LINKS

Table of n, a(n) for n=1..66.


EXAMPLE

1; 1,3; 1,5,9; 1,7,13,19; 1,9,17,25,33; ...


CROSSREFS

Cf. A053698.
Sequence in context: A298662 A306780 A209996 * A240222 A193702 A193710
Adjacent sequences: A129798 A129799 A129800 * A129802 A129803 A129804


KEYWORD

nonn,tabl


AUTHOR

Roger L. Bagula, May 18 2007


EXTENSIONS

Edited by N. J. A. Sloane at the suggestion of Andrew S. Plewe, May 20 2007


STATUS

approved



