-726

Appears in sequences

• Expansion of e.g.f. cos(log(1+tan(x))).at n=6A009021
• Image of partition numbers (A000041) under "little Hankel" transform that sends [c_0, c_1, ...] to [d_0, d_1, ...] where d_n = c_n^2 - c_{n+1}*c_{n-1}.at n=16A056222
• a(1) = 1, a(2n) = a(2n-1) + c(n) and a(2n+1) = a(2n) - p(n), where c(n)=A002808(n) and p(n)=A000040(n) are the n-th composite and n-th prime numbers, respectively.at n=59A073891
• Inverse binomial transform of number triangle A105632.at n=68A105847
• The triangle K referred to in A038200, read along rows.at n=70A126713
• a(n) = IntegerPart(PolyGamma(n,1)).at n=5A144167
• First differences of A046163.at n=32A153171
• Series reversion of A028310.at n=11A185966
• Expansion of eta(q)^6 * eta(q^2) / eta(q^4)^2 in powers of q.at n=25A245643
• G.f.: A(x,y) = Sum_{n=-oo..+oo} (x*y)^(n*(n+1)/2) * C(x)^(2*n-1), where C(x) = 1 + x*C(x)^2 is the g.f. of the Catalan numbers (A000108).at n=36A355346
• Expansion of Sum_{k>0} (1/(1+x^k)^3 - 1).at n=34A363630
• Expansion of (1/x) * Series_Reversion( x*(1+x+x^3)/(1+x)^3 ).at n=8A366117