50254

Appears in sequences

• Number of permutations of 0..(n-1) representable as 1,2,1-weighted consecutive sums of 3 adjacent elements of a sequence of n+2 nonnegative integers.at n=11A180213
• Expansion of Product_{k>=1} ((1 + x)^k - x^k)/((1 + x)^k + x^k).at n=18A307522
• Expansion of 1/(1 - x/(1 - 49*x^7)^(1/7)).at n=25A373511