-1971
domain: Z
Appears in sequences
- Expansion of e.g.f. cos(x)*cos(log(1+x)).at n=8A009097
- arctan(arcsin(tanh(x)))=x-3/3!*x^3+49/5!*x^5-1971/7!*x^7+147457/9!*x^9...at n=3A012126
- a(n) = 6^n - n^7.at n=3A024069
- Reversion of partitions into distinct parts A000009.at n=10A050393
- G.f. A(x) satisfies: A(x)^-3 + A(-x)^-3 = 2 and A(x)^3 - A(-x)^3 = 18*x.at n=4A196865
- Numerators of hypergeometric Cauchy numbers c_(3,n).at n=4A224091
- First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 421", based on the 5-celled von Neumann neighborhood.at n=25A272052
- First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 473", based on the 5-celled von Neumann neighborhood.at n=27A272426
- G.f. A(x,y) = Sum_{n>=0} x^n/(1-y)^(2*n+1) * Sum_{k=0..3*n} T(n,k)*y^k satisfies: y = Sum_{n=-oo..+oo} (-1)^n * x^(n*(n+1)/2) * A(x,y)^n.at n=30A355870