A155123 A finite irregular triangle.

1, 2, 2, 2, 0, 4, 4, 0, -4, 8, 12, 0, 8, -32, 8, 48

Offset

0,2

Comments

Row sums are 1, 2, 4, 8, 16, 32.

Links

Table of n, a(n) for n=0..15.

Example

{1},
{2},
{2, 2},
{0, 4, 4},
{0, -4, 8, 12},
{0, 8, -32, 8, 48}

Mathematica

a1 = {
{1},
{1, 1},
{1, 2 *n, 1},
{1, -1 + 2 *n + 2 n^2, -1 + 2 n + 2 n^2, 1},
{1, -2 + 2 *n + 2 n^2 + 2 n^3, 2 - 8 n + 4 n^2 + 8 n^3, -2 + 2* n + 2 n^2 + 2 n^3, 1},
{1, -3 + 2 n + 2 n^2 + 2 n^3 + 2 n^4, 2 + 2 n - 18 n^2 + 2 n^3 + 22 n^4, 2 + 2 n - 18 n^2 + 2 n^3 + 22 n^4, -3 + 2 n + 2 n^2 + 2 n^3 + 2 n^4, 1}
}
Table[CoefficientList[Apply[Plus, a1[[m]]], n], {m, 1, Length[a1]}];
Flatten[%]

Crossrefs

Cf. A142463.

Sequence in context: A263527 A261444 A000091 * A125938 A215461 A158851

Adjacent sequences: A155120 A155121 A155122 * A155124 A155125 A155126

Keyword

tabf,uned,sign,less,fini,full

Author

Roger L. Bagula, Jan 20 2009

Status

approved