141639680domain: NAppears in sequencesSextuple factorial numbers: a(n) = Product_{k=0..n-1} (6*k+2).at n=7A047657Sextuple factorials, 6-factorials, n!!!!!!, n!6.at n=38A085158Triangle read by rows: t(n,m)=If[m == 0, 1, Product[m*k + 2, {k, 0, n}]].at n=27A153190