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A091153
Third column of triangle A091150, in which the n-th row lists the coefficients of the polynomial of degree n that generates the n-th diagonal.
1
1, 4, 16, 67, 298, 1414, 7177, 39016, 227074, 1412233, 9359110, 65877178, 490870183, 3859788706, 31935828166, 277326346945, 2521757765632, 23961974750980, 237491787270343, 2451092004316246, 26302725994187392
OFFSET
0,2
FORMULA
a(n) = sum_{k=0..n} A091150(n, k)*3^k.
EXAMPLE
a(3)=67=(1)+(4)3+(3)3^2+(1)3^3 since 3rd row of A091150 is {1,4,3,1}.
CROSSREFS
KEYWORD
nonn
AUTHOR
Paul D. Hanna, Dec 22 2003
STATUS
approved