184549375domain: NAppears in sequencesa(n) = 11*2^n - 1.at n=24A086225a(n) = (n-1)*2^n - 1.at n=22A163383a(n) = 11*4^n - 1.at n=12A198695a(n) = 11*8^n-1.at n=8A198858Decimal representation of the middle column of the "Rule 233" elementary cellular automaton starting with a single ON (black) cell.at n=27A267880