49642

Appears in sequences

• Number of permutations of length n which avoid the patterns 1234, 1342, 1432.at n=9A116798
• Triangle T(n, k) = coefficients of p(x,n), where p(x,n) = ((1-x)^(2*n+1)/x^n) * Sum_{j >= n} ( (2*j+1)^n * binomial(j, n) * x^j ), read by rows.at n=18A156654
• Expansion of x*(1 + x^2 - x^3) / ( (1-x)*(1-x-x^4) ).at n=32A168639