10073316domain: NAppears in sequencesa(n) = ((n-th prime)^4-(n-th prime)^2)/2.at n=18A138418Let T(n) = n(n+1)/2 be the n-th triangular number (A000217); a(n) = T(8T(n)).at n=33A185096The numbers appearing in the first layer of the number stack in A370193.at n=28A374496