88781

Appears in sequences

• Numbers n such that sigma(n) - sigma(reverse(n)) = phi(n).at n=6A071847
• Number of inequivalent (mod D_8) ways to place 3 nonattacking knights on an n X n board.at n=11A243718
• a(n) = n*(n + 1)*(5*n^2 + 5*n - 4)/12.at n=21A264853