# A053781 (b-file synthesized from sequence entry) 1 1 2 2 3 3 4 7 5 11 6 71 7 107 8 115 9 139 10 155 11 681 12 1671 13 4876 14 21464 15 30046 16 311271 17 788749 18 10893662 19 20743270 20 134568163 21 163879554 22 920161004 23 6364787032 24 21400458779 25 47934932406 26 56133884369 27 288050185452 28 536023681676 29 1484061538595