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A111554 Column 1 of triangle A111553. 1
1, 2, 10, 72, 632, 6352, 70912, 864192, 11371072, 160333952, 2409420032, 38428442112, 648333665792, 11538313372672, 216092576714752, 4249731095212032, 87591291183296512, 1888669450881032192 (list; graph; refs; listen; history; internal format)
OFFSET

0,2

PROG

(PARI) {a(n)=if(n<0, 0, (matrix(n+2, n+2, m, j, if(m==j, 1, if(m==j+1, -m+1, -(m-j-1)*polcoeff(log(sum(i=0, m, (i+3)!/3!*x^i)), m-j-1))))^-1)[n+2, 2])}

CROSSREFS

Cf. A111553.

Sequence in context: A118748 A118752 A060842 * A177384 A052555 A204808

Adjacent sequences:  A111551 A111552 A111553 * A111555 A111556 A111557

KEYWORD

nonn

AUTHOR

Paul D. Hanna (pauldhanna(AT)juno.com), Aug 07 2005

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Last modified February 16 04:18 EST 2012. Contains 205860 sequences.