# A293310 (b-file synthesized from sequence entry) 0 1 1 76 2 1460 3 13604 4 81555 5 363606 6 1310974 7 4029310 8 10936124 9 26868719 10 60843972 11 128724276 12 257103166 13 488789593 14 890341484 15 1562177132 16 2651877099 17 4371379686 18 7018869628 19 11006262508 20 16893296453 21 25429357976 22 37604290362