196508domain: NAppears in sequencesSum of generalized tribonacci numbers A001644 and inverted tribonacci numbers A075298.at n=20A075418Number of n X 3 binary arrays without the pattern 0 0 diagonally or vertically.at n=8A188700Expansion of Product_{k>=1} (1 - x^k)^prime(k+1).at n=35A353170