433162

Appears in sequences

• One half of the number of permutations of [n] such that the differences have 4 runs with the same signs.at n=6A000486
• Triangle T(n,k) = P(n,k)/2, n >= 2, 1 <= k < n, of one-half of number of permutations of 1..n such that the differences have k runs with the same signs.at n=48A008970