# A116600 (b-file synthesized from sequence entry) 0 1 1 0 2 0 3 0 4 1 5 4 6 15 7 40 8 103 9 238 10 531 11 1131 12 2362 13 4811 14 9694 15 19307 16 38243 17 75400 18 148443 19 291984 20 574724 21 1132368 22 2234617 23 4416937 24 8745567 25 17343737 26 34446090 27 68500682 28 136374947 29 271755878 30 541950747 31 1081467319 32 2159170372 33 4312555339 34 8616279482 35 17219151572 36 34418065540 37 68805730450 38 137566021077