-1019

Appears in sequences

• Expansion of e.g.f.: exp(tanh(arctan(x)))=1+x+1/2!*x^2-3/3!*x^3-15/4!*x^4+41/5!*x^5...at n=7A012256
• McKay-Thompson series of class 9c for the Monster group.at n=16A058095
• McKay-Thompson series of class 9b for the Monster group.at n=48A112146
• a(n)=-a(n-1)+4*a(n-2)+4*a(n-3).at n=10A136249
• A transform of the Motzkin numbers.at n=24A157143
• Values of n such that L(4) and N(4) 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=17A226924
• The c coefficients of the transform a*x^2 + (4*a/k - b)*x + 4*a/k^2 + 2*b/k + c = 0 for a,b,c = 1,-1,-1, k = 1,2,3...at n=32A229526
• First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 395", based on the 5-celled von Neumann neighborhood.at n=21A271688
• First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 441", based on the 5-celled von Neumann neighborhood.at n=21A272224
• Expansion of (eta(q)*eta(q^3))/eta(q^2)^2 in powers of q.at n=29A293306
• Coefficients in the power series expansion of A(x) = Sum_{n=-oo..+oo} n * x^n * (1 - x^n)^(n-2).at n=33A356774
• Expansion of B(x)^2, where B(x) is the g.f. of A108482.at n=40A373419
• E.g.f. A(x) satisfies A(x) = exp( x * cos(x * A(x)) ).at n=6A381146