6921060

Appears in sequences

• a(n) = ((n-th prime)^4-(n-th prime)^2)/2.at n=17A138418
• Let T(n) = n(n+1)/2 be the n-th triangular number (A000217); a(n) = T(8T(n)).at n=30A185096
• Triangular numbers that are the product of a triangular number and a square number (both greater than 1).at n=32A253650