91025

Appears in sequences

• Fermat coefficients.at n=27A000970
• a(n) = floor(C(n,4)/5).at n=59A011795
• Number of partitions of n*(n+1)/2 with at most four parts that can be obtained from grouping (with parentheses) a permutation of the sum 1+2+...+n.at n=21A160438