-797

Appears in sequences

• a(n) = a(n-1) - 2*a(n-2) with a(0) = 2, a(1) = 1.at n=19A002249
• Expansion of tanh(x)*cos(tan(x)).at n=3A009826
• McKay-Thompson series of class 16B for the Monster group.at n=46A029839
• E.g.f. is 1/E(x) where E(x) is e.g.f. for [1,0,1,1,2,3,5,8,...] with o.g.f. (1-x)/(1-x-x^2).at n=8A057596
• McKay-Thompson series of class 16d for the Monster group.at n=46A082304
• Triangle read by rows: the n-th row consists of the coefficients in the expansion of Sum_{j=0..n} A123162(n,j)*x^j*(1 - x)^(n - j).at n=31A123217
• a(n) = -n^2 + 9*n + 53.at n=34A126665
• L.g.f.: Sum_{n>=1} a(n)*x^n/n = log( Sum_{n>=0} x^(2^n-1) ).at n=15A162415
• a(n) = -n^3 + 70*n^2 - 939*n + 2393.at n=11A279538
• Inverse Euler transform of the Moebius function A008683.at n=24A320781
• Product_{n>=1} (1 + a(n)*x^n) = 1 + Sum_{n>=1} mu(n)*x^n, where mu = A008683.at n=24A353926
• Product_{n>=1} (1 + x^n)^a(n) = 1 + Sum_{n>=1} mu(n)*x^n, where mu = A008683.at n=24A353927
• Product_{n>=1} 1 / (1 - a(n)*x^n) = 1 + Sum_{n>=1} mu(n)*x^n, where mu = A008683.at n=24A353949