# A298300 (b-file synthesized from sequence entry) 2 1 3 4 4 11 5 31 6 87 7 246 8 699 9 1996 10 5723 11 16468 12 47533 13 137567 14 399073 15 1160082 16 3378483 17 9855207 18 28790403 19 84218052 20 246651729 21 723165765 22 2122391109 23 6234634266 24 18330019029 25 53932825926 26 158802303429 27 467898288676 28 1379485436579 29 4069450219561