64741domain: NAppears in sequencesExpansion of 1/((1-2x)(1-3x)(1-9x)(1-10x)).at n=4A025952Number of compositions of n with first part 1 and no equal adjacent parts; this is column 1 of the array in A096568.at n=22A096569Number of Pythagorean triples with perimeter <= 10^n.at n=4A299706