A065232 Fill a triangular array by rows by writing numbers 1 up to b(0), 1 up to b(1), etc., where b(n) are the octagonal numbers. The first elements of the rows form a(n).

1, 1, 3, 6, 2, 7, 13, 20, 7, 16, 26, 37, 9, 22, 36, 51, 2, 19, 37, 56, 76, 1, 23, 46, 70, 95, 121, 15, 43, 72, 102, 133, 165, 22, 56, 91, 127, 164, 202, 16, 56, 97, 139, 182, 226, 271, 37, 84, 132, 181, 231, 282, 334, 46, 100, 155, 211, 268, 326, 385, 37, 98, 160

Offset

0,3

Links

Table of n, a(n) for n=0..62.

Crossrefs

Cf. A064766, A064865, A065221-A065231, A065233-A065234.

Sequence in context: A328503 A333826 A125717 * A074170 A076543 A274648

Adjacent sequences: A065229 A065230 A065231 * A065233 A065234 A065235

Keyword

easy,nonn

Author

Floor van Lamoen, Oct 22 2001

Status

approved