112561domain: NAppears in sequencesIndices k such that 8 plus the k-th triangular number is a perfect square.at n=12A154141a(n) = 4*n^3 + 5*n^2 + 2*n + 1.at n=30A204674Values of w(k) when w(k-2), w(k-1), and w(k) are all odd, where w is A336957.at n=33A338071