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A125655
Column 2 of triangle A125653; also equals the eigensequence of the matrix square of A125653.
6
1, 1, 3, 8, 24, 84, 335, 1495, 7381, 39912, 234360, 1483864, 10070570, 72885794, 560059512, 4551397316, 38984638708, 350888140187, 3309798388178, 32639617094998, 335781293403494, 3596524434640951, 40035909421823293
OFFSET
0,3
COMMENTS
Column k of triangle A125653 equals the eigensequence of matrix power A125653^k for k>=0.
FORMULA
a(n) = A125653(n+2,2) = Sum_{k=0..n-1} [A125653^2](n-1,k)*a(k) for n>0 with a(0)=1.
CROSSREFS
Cf. A125653 (triangle); rows: A125654, A125656, A125657; A125658 (row sums); A125659 (central terms).
Sequence in context: A242985 A148787 A371979 * A134165 A071016 A174662
KEYWORD
nonn
AUTHOR
Paul D. Hanna, Nov 30 2006
STATUS
approved