0,3

Term-by-term square of sequence with e.g.f.: exp(x+m/2*x^2) is given by e.g.f.: exp(x/(1-m*x))/sqrt(1-m^2*x^2) for all m.

Term-by-term square equals A115332 which has e.g.f.: exp(x/(1-5*x))/sqrt(1-25*x^2).

(PARI) a(n)=local(m=5); n!*polcoeff(exp(x+m/2*x^2+x*O(x^n)), n)

Cf. A115332.

Adjacent sequences: A115328 A115329 A115330 this_sequence A115332 A115333 A115334

Sequence in context: A091148 A009354 A034191 this_sequence A113561 A135538 A080809

nonn

Paul D. Hanna (pauldhanna(AT)juno.com), Jan 20 2006