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A111545 Column 1 of triangle A111544. 1

%I

%S 1,2,9,57,441,3933,39249,430677,5137641,66103533,911973249,

%T 13428837477,210259505241,3489291147933,61200522593649,

%U 1131630622515477,22007781151434441,449197758198576333,9603342828706622049

%N Column 1 of triangle A111544.

%o (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])}

%Y Cf. A111544.

%K nonn

%O 0,2

%A _Paul D. Hanna_, Aug 07 2005

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Last modified January 16 23:33 EST 2022. Contains 350377 sequences. (Running on oeis4.)