-129644790

Appears in sequences

• a(n) = mu(n) * Catalan(n).at n=17A062627
• Carlitz-Riordan q-Catalan numbers (recurrence version) for q = -1.at n=35A090192
• An inverse Chebyshev transform of 1-x.at n=33A099363
• Expansion of c(-x^2)(1+2x-sqrt(1+4x^2))/2, c(x) the g.f. of A000108.at n=34A106181
• Expansion of c(-x^2)(1+2x-sqrt(1+4x^2))/2, c(x) the g.f. of A000108.at n=35A106181
• O.g.f. inverse of Catalan A000108 o.g.f.at n=18A115140
• Convolution of A115140 with itself.at n=18A115141
• a(n) = (-1)^[(n+1)/2] A000108([n/2]+1).at n=33A129996
• a(n) = (-1)^n*Catalan(n).at n=17A168491
• Expansion of (-1 + 2*x + sqrt( 1 - 4*x^2)) / (2*x) in powers of x.at n=35A210628
• Convolution inverse of A001700.at n=18A246432
• Dirichlet inverse of Catalan numbers, when started from A000108(1): 1, 2, 5, 14, 42, ...at n=16A349449