-11536

Appears in sequences

• Expansion of e.g.f. cos(x)/exp(tan(x)).at n=9A009114
• Expansion of log(1+x)*cosh(sinh(x)).at n=8A009413
• Start with 1, add 1, subtract 2, multiply by 3, add 4, subtract 5, multiply by 6, add 7, etc.at n=17A252729
• a(n) = -(A(n) - A(n-1)) where A(n) = A057597(n+1), for n >= 0.at n=32A319200
• a(0) = 0, a(1) = 1, for n > 1, a(n) = 2^(n+1) - 3*(sigma((2^n)-1) - sigma((2^(n-1))-1)).at n=12A329892