# A005623 (b-file synthesized from sequence entry) 1 1 2 3 3 5 4 6 5 8 6 17 7 25 8 34 9 67 10 103 11 134 12 265 13 405 14 616 15 1031 16 1565 17 2568 18 4205 19 6603 20 11000 21 18069 22 28975 23 46730 24 74855 25 120469 26 197412 27 317819 28 516103 29 830538 30 1343773 31 2177369 32 3527314 33 5699815 34 9228387 35 14926778