59523

Appears in sequences

• a(n) = T(n,n-1), T given by A026536. Also a(n) = number of integer strings s(0), ..., s(n), counted by T, such that s(n) = 1.at n=14A026538
• a(n) = (-1)^n*hypergeom([-n, n], [1], 4).at n=5A299507
• Rectangular array A(n, k) = (-1)^k*hypergeom([-k, k + n/2 - 1/2], [1], 4) with row n >= 0 and k >= 0, read by ascending antidiagonals.at n=26A300946