12703320

Appears in sequences

• a(n) = n!*(n!+1)/2.at n=7A055555
• a(n) = ((n-th prime)^4-(n-th prime)^2)/2.at n=19A138418
• Let T(n) = n(n+1)/2 be the n-th triangular number (A000217); a(n) = T(8T(n)).at n=35A185096