OFFSET
1,2
FORMULA
a(n) is asymptotic to C*sqrt(n) with 3.5<C<3.6... Is it true that C = exp(Pi/sqrt(6))?
PROG
(PARI) a(n)=if(n<0, 0, k=1; while(polcoeff(prod(i=1, k, 1+x^i), k*(k+1)\4)-polcoeff(1/eta(x), n)<0, k++); k)
CROSSREFS
KEYWORD
nonn
AUTHOR
Benoit Cloitre, Feb 02 2003
STATUS
approved