# A211286 (b-file synthesized from sequence entry) 0 1 1 3 2 9 3 25 4 70 5 195 6 545 7 1526 8 4284 9 12056 10 34013 11 96195 12 272718 13 775011 14 2207557 15 6302309 16 18031941 17 51702239 18 148548283 19 427644891 20 1233449265 21 3564068374 22 10316244428 23 29909714061 24 86852526228 25 252579033621 26 735567723900 27 2144990584607 28 6262870100183 29 18307786519038 30 53577582619466