37941domain: NAppears in sequencesG.f. satisfies A(x) = 1/(1 - x*A(2x)^2).at n=5A171192Number of compositions (ordered partitions) of n into centered hexagonal numbers (A003215).at n=49A322802Array read by rows: row n consists of the numbers k such that k^2 + (sum of n-th powers of the digits of k^2) is a square.at n=20A360424