547337domain: NAppears in sequencesTetranacci numbers: a(n) = a(n-1) + a(n-2) + a(n-3) + a(n-4) for n >= 4 with a(0) = a(1) = a(2) = 0 and a(3) = 1.at n=24A000078Number of compositions (ordered partitions) of n into parts not greater than sqrt(n).at n=21A364526