7628799domain: NAppears in sequencesDecimal representation of the n-th iteration of the "Rule 137" elementary cellular automaton starting with a single ON (black) cell.at n=12A267512Expansion of 1 / ( (1 - 8*x^4) * (1 - x/(1 - 8*x^4)^(1/4)) ).at n=29A373627