# A305370 (b-file synthesized from sequence entry) 0 1 1 2 2 3 3 5 4 8 5 15 6 29 7 50 8 103 9 164 10 417 11 649 12 1324 13 2684 14 5348 15 10226 16 21298 17 41538 18 84652 19 165034 20 322262 21 646648 22 1283556 23 2584860 24 5163368 25 10271638 26 20566708 27 40308350 28 80758553 29 161522919 30 322519008 31 637135132