# A150031 (b-file synthesized from sequence entry) 0 1 1 2 2 6 3 16 4 62 5 209 6 826 7 2884 8 12327 9 46607 10 197833 11 754220 12 3343667 13 13318517 14 58434940 15 233005648 16 1052872124 17 4322695836 18 19330561228 19 79239584849 20 362301103486 21 1517546326245 22 6870981921627 23 28703048456221 24 132297147943855 25 562147041928433 26 2567582959610258 27 10875375405053705