25176

Appears in sequences

• a(n) = a(n-1) + a(n-3) + a(n-4) + a(n-5) + a(n-7).at n=21A107480
• Triangle T(n,k) with the coefficient [x^k] of the series (1-x)^(n+1)* sum_{m=0..infinity} [(3*m+1)^n + (3*m+2)^n]*x^m in row n, column k.at n=17A154646
• Triangle T(n,k) with the coefficient [x^k] of the series (1-x)^(n+1)* sum_{m=0..infinity} [(3*m+1)^n + (3*m+2)^n]*x^m in row n, column k.at n=18A154646
• Number of reduced words of length n in the Weyl group B_18.at n=5A161878
• Number of reduced words of length n in the Weyl group D_18.at n=5A162346
• Number of palindromic double occurrence words of length 2n.at n=8A195186
• Coefficients of the nonnegative powers of rho(11) = 2*cos(Pi/11) when written in the power basis of the degree 5 number field Q(rho(11)). Coefficients of the third power.at n=16A231185
• Numbers k such that 6*5^k - 1 is prime.at n=22A257790
• a(n) equals the sum of all permutations of compositions of functions (1 + k*x) for k=1..n, evaluated at x=1.at n=5A277406
• Number of single-crossing partitions on n nodes.at n=11A287220
• Expansion of (1-5*x+6*x^2-x^3)/(1-9*x+28*x^2-35*x^3+15*x^4-x^5).at n=8A370051