41979

Appears in sequences

• Triangle, read by rows, where the n-th row lists the (2n+1) coefficients of (1+2*x+3*x^2)^n.at n=57A084608
• Number of 5-step S, NW and NE-moving king's tours on an n X n board summed over all starting positions.at n=26A187379
• Number of 4 X n binary arrays without the pattern 0 1 diagonally, vertically, antidiagonally or horizontally.at n=32A188555
• Number of words of length n over the alphabet {0,...,n-1} that are 1234-avoiding.at n=6A239299
• Words of length n over the alphabet {0,...,n-1} that are 1324-avoiding.at n=6A239300
• Number T(n,k) of permutations of [n] with exactly k (possibly overlapping) occurrences of the generalized pattern 23-1; triangle T(n,k), n>=0, 0<=k<=A125811(n)-1, read by rows.at n=52A260670
• Number of permutations of [n] with exactly five (possibly overlapping) occurrences of the generalized pattern 23-1.at n=3A264464