1502501
domain: N
Appears in sequences
- Binomial coefficients C(n,75).at n=4A017739
- Binomial coefficients C(79,n).at n=4A017795
- a(n) = A001512(n)/24 = (5*n+1)*(5*n+2)*(5*n+3)*(5*n+4)/24.at n=15A151989
- Doubly pentagonal numbers: a(n) = n*(3*n-2)*(3*n-1)*(3*n+1)/8.at n=26A232713
- Number of intersections of diagonals in the interior of a regular p-gon where p is the n-th prime.at n=21A262248
- Number of 5-member subsets of [5*n] whose elements sum to a multiple of n.at n=16A318626