64190

Appears in sequences

• Number of rational points of Klein curve over GF(2^n).at n=15A048635
• Number of compositions (ordered partitions) of n into powers of 4.at n=36A087221
• G.f. satisfies A(x) = 1 + x*A(x)*f(x)^3, where f(x) = Sum_{k>=0} x^((4^k-1)/3).at n=12A087222
• G.f.: A(x) = F(x*G(x)^2)^2 where F(x) = G(x/F(x)) = 1 + x*F(x)^2 is the g.f. of A000108 (Catalan) and G(x) = F(x*G(x)) = 1 + x*G(x)^3 is the g.f. of A001764.at n=7A153297
• Number of fixed tree-like convex polyominoes.at n=13A196593
• Total number of parts greater than 1 in all partitions of n minus the number of partitions of n into parts each less than n.at n=34A198381
• Number of permutations of [n] avoiding {1324, 3421, 3241}.at n=11A294806
• a(n) = [x^n] 1/(1 - Sum_{k>=1} k^n*x^(2*k)/(1 - x^k)).at n=9A321263