71449domain: NAppears in sequencesExpansion of 1/((1-2x)(1-3x)(1-7x)(1-12x)).at n=4A025947Numbers k such that the k-th triangular number contains only digits {1,2,5}.at n=21A119102Number of partitions p of n not including ceiling(mean(p)) as a part.at n=48A241337