-1712
domain: Z
Appears in sequences
- Expansion of 1 / (Sum_{n=-oo..oo} x^(n^2))^4.at n=5A004405
- Expansion of exp(x)/cosh(sinh(x)).at n=9A009296
- Expansion of e.g.f. sin(x)/cos(sin(x)) (odd powers only).at n=4A009553
- Expansion of (1-x)/(1+x+2*x^2+x^3).at n=27A078051
- Expansion of Product_{n >= 1} (1+q^(2*n-1))/((1-q^(4*n))*(1+q^(4*n-2))).at n=51A144558
- First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 189", based on the 5-celled von Neumann neighborhood.at n=21A270680
- G.f. satisfies A(A(A(A(x)))) = F(x), where F(x) is the g.f. for A002697(n) = n*4^(n-1).at n=8A372492