-1638
domain: Z
Appears in sequences
- Expansion of (1-x)^(-1)/(1-x+2*x^3).at n=21A077870
- Expansion of (1-x)^(-1)/(1-x+2*x^3).at n=23A077870
- Expansion of (1-x)/(1-x+2*x^3).at n=26A078014
- The exponential generating function A(x) = Sum a(j) x^j/j! satisfies the functional equation A(x)=1+x*(A(x))*(1-log(A(x))).at n=7A080073
- Generalized Stirling number triangle of first kind.at n=49A094646
- Riordan array (1,c(-x)), where c(x) = g.f. of Catalan numbers.at n=72A099039
- Coordination sequence for Penrose tiling is a(n)*tau + A103907(n), where tau is A001622.at n=7A103906
- Expansion of e.g.f. (1 + y)^(1 + x).at n=51A105793
- Sixth convolution of A115140.at n=11A115145
- Row sums of triangle A118404.at n=13A118405
- a(n) = A000730(7*n).at n=25A282941
- Expansion of Product_{k>=1} ((1 - 8*x^k)/(1 + 8*x^k))^(1/8).at n=5A303396
- Expansion of Product_{k>=1} ((1 - 8^k*x^k)/(1 + 8^k*x^k))^(1/8^k).at n=5A303491
- Irregular triangular array read by rows: row n shows the coefficients of this polynomial of degree n: (1/n!)*(numerator of n-th derivative of (1-x)/(x^2-3x+1)).at n=49A328646
- a(n) = A048250(n) * A345001(n).at n=40A344999
- Coefficients of the inverse refined Eulerian partition polynomials [E]^{-1}, partitional inverse to A145271. Irregular triangle read by row with lengths A000041.at n=36A356145