114032

Appears in sequences

• Number T(n,k) of compositions of n where each part i is marked with a word of length i over a k-ary alphabet whose letters appear in alphabetical order and all k letters occur at least once in the composition; triangle T(n,k), n >= 0, 0 <= k <= n, read by rows.at n=32A261781
• Number of compositions of n where each part i is marked with a word of length i over a quaternary alphabet whose letters appear in alphabetical order and all four letters occur at least once in the composition.at n=3A293581
• Number of prefix normal palindromes of length n.at n=41A308465
• a(n) = Sum_{k=1..n} k^2*tau_3(k), where tau_3 is A007425.at n=29A319088