203440domain: NAppears in sequencesNumber of isosceles right triangles on a 2n X (n+1) grid.at n=18A189894Numbers k such that k divides 1 + Sum_{j=1..k} prime(j)^15.at n=23A233413Expansion of Sum_{k>0} (1/(1-x^k)^6 - 1).at n=26A363696