# A204107 (b-file synthesized from sequence entry) 0 1 1 4 2 55 3 404 4 2462 5 11196 6 41135 7 122897 8 307319 9 652286 10 1199755 11 1950378 12 2885188 13 4043706 14 5718245 15 8888485 16 16594082 17 39074532 18 115646521 19 414852909 20 1714717418 21 7743579586 22 36521752030 23 174522348856