31864

Appears in sequences

• a(n) = Sum_{k=0..n} (k+1) * A026747(n, k).at n=11A027227
• Main diagonal of array A[k,n] = n-th sum of 3 consecutive k-gonal numbers, k>2.at n=27A130423
• The Riordan square of the little Schröder numbers A001003.at n=38A172094
• Number of forests of trees on n labeled nodes in which each tree has a distinct number of vertices.at n=7A216413
• Numbers k such that k divides 1 + Sum_{j=1..k} prime(j)^9.at n=18A232964
• Number of maximal independent vertex sets in the n-Cameron graph.at n=4A387589