# A220117 (b-file synthesized from sequence entry) 0 0 1 3 2 13 3 47 4 55 5 254 6 767 7 987 8 6909 9 16127 10 28657 11 28670 12 125951 13 196575 14 393213 15 4160255 16 4177911 17 25157623 18 25157631 19 46137325 20 67088375 21 268296191 22 268434303 23 268435455