7726623domain: NAppears in sequencesNumber of times an even number is encountered, when going from (n+1)!-1 to n!-1 using the iterative process described in A219652.at n=10A219662a(n) = n^5 + 4*n^4 + 13*n^3 + 23*n^2 + 25*n + 3.at n=23A270869