# A100025 (b-file synthesized from sequence entry) 0 1 1 1 2 7 3 21 4 92 5 291 6 981 7 2871 8 8134 9 21131 10 52481 11 122759 12 275356 13 590289 14 1220811 15 2436045 16 4715827 17 8866230 18 16246890 19 29054190 20 50830264 21 87104226 22 146467614 23 241934106 24 393098860 25 628867434 26 991602894 27 1542350194 28 2368492984 29 3593354974