A118035 Column 2 of triangle A118032, where column 2 of the matrix square of A118032 forms a bisection of this sequence.

1, 3, 6, 15, 24, 57, 84, 192, 270, 567, 780, 1683, 2268, 4392, 5832, 12084, 15876, 29073, 37848, 75753, 98058, 172269, 221400, 430248, 550644, 938784, 1194096, 2272308, 2880324, 4793652, 6042600, 11202642, 14072928, 22952439, 28685316

Offset

0,2

Comments

Column 2 of triangle A118040 (matrix square of A118032) equals A118043, the even-indexed bisection of this sequence. Column 2 of triangle A118045 equals A118048, the odd-indexed bisection of this sequence.

Links

Table of n, a(n) for n=0..34.

Crossrefs

Cf. A118032 (triangle), A118033 (column 0), A118034 (column 1); bisections: A118043 (even-indexed), A118048 (odd-indexed); related triangles: A118040 (A118032^2), A118045.

Sequence in context: A281758 A280465 A282263 * A272073 A282008 A281212

Adjacent sequences: A118032 A118033 A118034 * A118036 A118037 A118038

Keyword

nonn

Author

Paul D. Hanna, Apr 10 2006

Status

approved