# A133470 (b-file synthesized from sequence entry) 1 2 2 5 3 9 4 17 5 29 6 49 7 81 8 135 9 225 10 371 11 614 12 1013 13 1672 14 2757 15 4548 16 7499 17 12365 18 20388 19 33615 20 55423 21 91378 22 150659 23 248395 24 409536 25 675212 26 1113237 27 1835419 28 3026095 29 4989189 30 8225783 31 13562025 32 22360001 33 36865410 34 60780788 35 100210579 36 165219314 37 272400598 38 449112661