36609

Appears in sequences

• Number of irreducible representations of the symmetric group S_n such that their degree is divisible by 3.at n=39A061569
• Number of permutations of length n which avoid the patterns 1234, 2143, 3421.at n=33A116842
• Expansion of 1/((1-x)*(1-x^2)*(1-x^3)*(1-x^4))^2.at n=28A117486
• G.f.: exp( Sum_{n>=1} A322185(n)*x^n/n ), where A322185(n) = sigma(2*n) * binomial(2*n,n)/2.at n=7A322186