144840

Appears in sequences

• a(n) = 2nd elementary symmetric function of the first n+1 positive integers congruent to 1 mod 4.at n=15A024378
• Number of permutations of [n] with exactly one occurrence of the consecutive step pattern up, down, up.at n=9A227883
• Number T(n,k) of permutations of [n] with exactly k (possibly overlapping) occurrences of the consecutive step pattern up, down, up; triangle T(n,k), n>=0, 0<=k<=max(0,floor(n/2)-1), read by rows.at n=19A227884
• On a spirally numbered square grid, with labels starting at 0, this is the number of the final step that a (1,n) leaper makes before getting trapped, or -1 if it never gets trapped.at n=10A323470
• a(n) is the sum, over all overpartitions of n, of the overlined parts.at n=22A335666