143196domain: NAppears in sequencesArray (a frieze pattern) defined by a(n,k) = (a(n-1,k)*a(n-1,k+1) - 1) / a(n-2,k+1), read by antidiagonals.at n=52A007754Denominators of continued fraction for left factorial.at n=23A056890Denominators of continued fraction for alternating factorial.at n=15A056922Column 2 of A007754.at n=7A058799