-255

Appears in sequences

• Expansion of e.g.f. log(1+tanh(x)/cosh(x)).at n=9A009401
• Expansion of e.g.f. sinh(log(1+x))/cosh(x).at n=6A009577
• Expansion of tan(log(1+x)/cosh(x)).at n=6A009653
• arctan(sec(x)*tan(x))=x+3/3!*x^3-15/5!*x^5-1197/7!*x^7-255/9!*x^9...at n=4A012796
• Expansion of e.g.f. log(cosh(x) + tanh(x)).at n=9A013191
• a(n) = 1 - n^4.at n=4A024002
• a(n) = 1 - n^8.at n=2A024006
• Expansion of Product_{k > 0} 1/(1 + x^prime(k)).at n=65A048165
• Triangle of coefficients of polynomials H(n,x) formed from the first (n+1) terms of the power series expansion of ( -x/log(1-x) )^(n+1), multiplied by n!.at n=43A075263
• Expansion of 1/((1 - 2*x + 2*x^2)*(1-x)).at n=14A077860
• Expansion of 1/((1 - 2*x + 2*x^2)*(1-x)).at n=15A077860
• Signed Stirling numbers of the second kind.at n=37A080417
• Expansion of q^(1/24) * eta(q) / eta(q^2) in powers of q.at n=63A081362
• First order recursion: a(0)=1; a(n) = sigma(1,n) - a(n-1).at n=39A083238
• First order recursion: a(0) = 1; a(n) = phi(n) - a(n-1) = A000010(n) - a(n-1).at n=52A083239
• Odd-indexed terms of the binomial transform equals 1 and the even-indexed terms of the second binomial transform equals 1.at n=8A090158
• G.f. A(x) has the property that the first (n+1) terms of A(x)^(n+1) form the n-th row polynomial R_n(y) of triangle A097181 and satisfy R_n(1/2) = 8^n for all n>=0.at n=14A097182
• Expansion of 1/sqrt(1 - 6*x + 25*x^2).at n=4A098341
• A sequence of triples arising from a matrix calculation, in particular let m = floor(n/3), then (a(3*m), a(3*m+1), a(3*m+2)) = M^(m*(m+1)/n) * (0, 1, 1) where M is the matrix [[2,0,1], [0,1,0], [-2,1,0]].at n=15A103193
• Riordan array (1/(1+2x), x/(1+x)).at n=37A103316