697856

Appears in sequences

• Number T(n,k) of permutations of [n] with exactly k occurrences of the consecutive step pattern up, down, down, down; triangle T(n,k), n>=0, 0<=k<=max(0,floor((n-1)/4)), read by rows.at n=17A242820
• Number of binary words of length 2n with an even number of 1's which are not shuffle squares.at n=11A360412