-29568

Appears in sequences

• Expansion of tan(x)*cosh(log(1+x)).at n=8A009731
• Expansion of e.g.f.: sech(arctanh(x)*log(x+1))=1-12/4!*x^4+60/5!*x^5-570/6!*x^6...at n=8A012708
• Skew triangle associated to the Euler numbers.at n=74A117411
• Triangle T(n, k) = binomial(2*n-k, k)*(-4)^(n-k), read by rows.at n=41A117438