114676domain: NAppears in sequencesa(n) is the difference between A084321(n) and the (n-1)th power of 2.at n=34A085355Column 6 of triangle A117418.at n=7A117424Triangle T, read by rows, formed by a column bisection of triangle A117418: column k of T equals column 2*k of A117418.at n=58A117425