# A030963 (b-file synthesized from sequence entry) 1 2 2 4 3 12 4 49 5 245 6 1470 7 10295 8 82362 9 741264 10 7412647 11 81539127 12 978469535 13 12720103955 14 178081455373 15 2671221830606 16 42739549289708 17 726572337925041 18 13078302082650740 19 248487739570364075 20 4969754791407281515