# A162364 (b-file synthesized from sequence entry) 0 1 1 22 2 252 3 2002 4 12396 5 63734 6 283107 7 1116236 8 3983485 9 13057330 10 39764011 11 113533312 12 306173263 13 784654154 14 1920802566 15 4510960122 16 10201294213 17 22286443124 18 47167714715 19 96947735390 20 193938666735 21 378324531180