A111545 Column 1 of triangle A111544.

1, 2, 9, 57, 441, 3933, 39249, 430677, 5137641, 66103533, 911973249, 13428837477, 210259505241, 3489291147933, 61200522593649, 1131630622515477, 22007781151434441, 449197758198576333, 9603342828706622049

Offset: 0

Author

Paul D. Hanna, Aug 07 2005

Keywords

• nonn

Crossrefs

Cf. A111544.

Programs

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+2)!/2!*x^i)),m-j-1))))^-1)[n+2,2])}