-2331

Appears in sequences

• Expansion of e.g.f.: arcsin(sinh(x)*log(x+1))=2/2!*x^2-3/3!*x^3+12/4!*x^4-40/5!*x^5...at n=7A012511
• Expansion of e.g.f.: sinh(sinh(x)*log(x+1))=2/2!*x^2-3/3!*x^3+12/4!*x^4-40/5!*x^5...at n=7A012514
• G.f.: Product_{k>0} (1-x^(2k-1))/(1-x^(2k)).at n=35A106507
• Values of n such that L(3) and N(3) are both prime, where L(k) = (n^2+n+1)*2^(2*k) + (2*n+1)*2^k + 1, N(k) = (n^2+n+1)*2^k + n.at n=52A226923
• a(n) = Sum_{k=1..n} (-1)^(k-1) * binomial(k+3,4) * floor(n/k).at n=15A366939