A111562 Column 2 of A111560, which is the matrix log of A111553.

0, 3, 10, 60, 470, 4344, 45320, 521200, 6513280, 87613440, 1260188800, 19286781440, 312884243840, 5363632995840, 96904980170240, 1840977689943040, 36700487712701440, 766296476640215040, 16728728381231472640

Offset

0,2

Links

Table of n, a(n) for n=0..18.

Prog

(PARI) {a(n)=local(M=matrix(n+3, n+3, 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))))); if(n<0, 0, sum(i=1, #M, (M^0-M)^i/i)[n+3, 3])}

Crossrefs

Cf. A111560, A111553.

Sequence in context: A103591 A245312 A018932 * A009654 A013565 A156075

Adjacent sequences: A111559 A111560 A111561 * A111563 A111564 A111565

Keyword

nonn

Author

Paul D. Hanna, Aug 07 2005

Status

approved