261808

Appears in sequences

• Triangle of numbers T(n,k) = number of permutations of n things with longest increasing subsequence of length <=k (1<=k<=n).at n=39A047887
• Number of permutations in S_n with longest increasing subsequence of length <= 4.at n=9A047889
• Duplicate of A047889.at n=8A052397
• Decimal representation of the diagonal from the corner to the origin of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 389", based on the 5-celled von Neumann neighborhood.at n=17A287977