# A121421 (b-file synthesized from sequence entry) 0 1 1 3 2 12 3 76 4 711 5 9054 6 147471 7 2938176 8 69328365 9 1891371807 10 58575539361 11 2030011517685 12 77827890696820 13 3270046577551695 14 149407542447596319 15 7374639622066056408 16 391044078030333899385 17 22168014954558449549349