141984

Appears in sequences

• a(n) = (prime(n)^5 - prime(n))/10.at n=6A138428
• Array T(n,k) read by antidiagonals: number of primitive polynomials of degree k over GF(prime(n)).at n=59A158502
• a(n) = (n^5 - n)/10, which is always an integer.at n=16A164938
• Number of ways to place 2 nonattacking nightriders on an n X n toroidal board.at n=23A196812
• a(n) = phi(n^5 - 1)/5 where phi is A000010.at n=15A319214