96520

Appears in sequences

• Number of arrays of 2n nondecreasing integers in -3..3 with sum zero and equal numbers greater than zero and less than zero.at n=36A203286
• Maximum number of copies of a 1234 permutation pattern in an alternating (or zig-zag) permutation of length n + 5.at n=36A338429
• a(1) = 1; a(n) = Sum_{k=1..ceiling(n/2)} a(k) * a(n-k).at n=15A348530