58705
domain: N
Appears in sequences
- a(n) = Sum_{k=1..n} floor(binomial(n,k)/k).at n=19A101687
- Number of isomorphism classes of nanocones with 4 pentagons and a symmetric boundary of length n.at n=21A198015
- Numbers m such that abs(K(m+1) - K(m)) = 2, and both m and m+1 are squarefree (A005117), where K(m) = A002034(m) is the Kempner function.at n=19A346212