# A024778 (b-file synthesized from sequence entry) 0 1 1 30 2 595 3 9840 4 147061 5 2063010 6 27740215 7 362136180 8 4628090521 9 58232585190 10 724277646235 11 8930528438520 12 109397647960381 13 1333481828166570 14 16193198750646655 15 196081347032548860