A129801 Triangle read by rows in which row m (m>=0) gives the numbers 2*m*n + 1 for n = 0, ..., m.

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

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: A306780 A209996 A340804 * 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