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A145159 G.f. A(x) satisfies A(x/A(x)) = 1/(1-x)^2. +0
2
1, 2, 7, 38, 283, 2624, 28408, 344972, 4580833, 65410070, 992850781, 15888876224, 266464473274, 4661494891166, 84761554257517, 1597453996121132, 31132664696108551, 626239933178389916, 12981131500452667888 (list; graph; listen)
OFFSET

0,2

FORMULA

Self-convolution of A145158.

PROGRAM

(PARI) {a(n)=local(A=1+x+x*O(x^n)); for(n=0, n, B=serreverse(x/A); A=1/(1-B)^2); polcoeff(A, n)}

CROSSREFS

Cf. A145158.

Sequence in context: A032109 A088792 A114160 this_sequence A084552 A094664 A001858

Adjacent sequences: A145156 A145157 A145158 this_sequence A145160 A145161 A145162

KEYWORD

nonn

AUTHOR

Paul D. Hanna (pauldhanna(AT)juno.com), Oct 03 2008

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.


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