# A030937 (b-file synthesized from sequence entry) 1 1 2 2 3 6 4 26 5 130 6 782 7 5477 8 43823 9 394415 10 3944157 11 43385731 12 520628778 13 6768174123 14 94754437735 15 1421316566034 16 22741065056549 17 386598105961333 18 6958765907303999 19 132216552238775996 20 2644331044775519933