50400890

Appears in sequences

• Number of n X n symmetric 0..7 arrays with rows, considered as 8-ary numbers, in nondecreasing order.at n=3A162083
• Number of 7-length words w over n-ary alphabet such that for every prefix z of w we have #(z,a_i) = 0 or #(z,a_i) >= #(z,a_j) for all j>i and #(z,a_i) counts the occurrences of the i-th letter in z.at n=15A213286