# A307442 (b-file synthesized from sequence entry) 0 1 1 2 2 9 3 54 4 379 5 2948 6 24736 7 220622 8 2074775 9 20491386 10 212312349 11 2310232488 12 26473612772 13 320735694048 14 4126350096188 15 56601987176510 16 830233489763775 17 13036492313617494 18 218958840306428947 19 3924128327446669670 20 74779561501535316579 21 1509296316416028136188