1660944384domain: NAppears in sequencesa(n) = n-th n-almost prime.at n=26A101695a(n) = 2^C(n+1,2)*A006012(n).at n=6A166231a(n) = binomial(n + 5, 5) * 8^n.at n=7A173155Number of compositions of partitions of 2n with exactly n compositions.at n=21A327550Column 1 in the matrix of A279212 (whose indexing starts at 0).at n=26A335903