# A149029 (b-file synthesized from sequence entry) 0 1 1 1 2 3 3 10 4 33 5 118 6 461 7 1806 8 7192 9 29586 10 123208 11 519050 12 2212177 13 9504493 14 41204497 15 179859178 16 789416425 17 3484337220 18 15452094569 19 68819851405 20 307696191256 21 1380467355267 22 6213170853187 23 28045076820667 24 126930546925837 25 575886553389489 26 2618708866944187 27 11933055962219804