# A045501 (b-file synthesized from sequence entry) 1 1 2 1 3 4 4 14 5 54 6 233 7 1101 8 5625 9 30846 10 180474 11 1120666 12 7352471 13 50772653 14 367819093 15 2787354668 16 22039186530 17 181408823710 18 1551307538185 19 13756835638385 20 126298933271289 21 1198630386463990 22 11742905240821910