103326

Appears in sequences

• Number of permutations of [n] with n-4 sequences.at n=4A001760
• Triangle read by rows: T(n,k) is the number of permutations of [n] with k alternating runs (n>=2, k>=1).at n=32A059427
• Triangle, read by rows, that transforms diagonals in the table of coefficients in the successive iterations of x+x^2 (cf. A122888).at n=49A135080
• Number of 9-element subsets of [n] having a prime element sum.at n=13A320684