# A049349 (b-file synthesized from sequence entry) 1 1 2 7 3 29 4 103 5 405 6 1599 7 6141 8 23863 9 92773 10 359791 11 1396493 12 5421415 13 21041397 14 81670431 15 317005341 16 1230432919 17 4775854213 18 18537264079 19 71951401517 20 279275580103 21 1083993881877 22 4207466012031 23 16331061009213