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Search: id:A136172
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A136172 Column 1 of triangle A136170. +0
4
1, 2, 9, 105, 2702, 154609, 19092682, 5161046609, 3089394167519, 4175309542037953, 12956948188014836324, 93772653247517510010693, 1603175184493001749597050954, 65450800470044797091307950768285 (list; graph; listen)
OFFSET

0,2

PROGRAM

(PARI) /* Generate using matrix power method: */ {a(n)=local(A=Mat(1), B); for(m=1, n+2, B=matrix(m, m); for(i=1, m, for(j=1, i, if(j==i, B[i, j]=1, B[i, j]=(A^(fibonacci(i-1)))[i-1, j]); )); A=B); return( ((A)[n+2, 2]))} (PARI) /* Generate using partial sums method: */ {a(n)=local(A=vector(n+1), p); A[1]=1; for(j=1, n, p=fibonacci(n+3)-fibonacci(n-j+3)-j; A=Vec((Polrev(A)+x*O(x^p))/(1-x))); A[ #A]}

CROSSREFS

Cf. A136170; A136171, A136173.

Adjacent sequences: A136169 A136170 A136171 this_sequence A136173 A136174 A136175

Sequence in context: A098610 A125815 A132494 this_sequence A012986 A062498 A008269

KEYWORD

nonn

AUTHOR

Paul D. Hanna (pauldhanna(AT)juno.com), Dec 17 2007

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Last modified January 7 17:35 EST 2009. Contains 152824 sequences.


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