# A125244 (b-file synthesized from sequence entry) 1 1 2 7 3 17 4 22 5 43 6 343 7 381 8 461 9 543 10 923 11 1045 12 1182 13 1486 14 1839 15 5643 16 8260 17 9009 18 10947 19 11793 20 15915 21 25151