# A074467 (b-file synthesized from sequence entry) 1 1 2 2 3 4 4 8 5 13 6 22 7 38 8 63 9 105 10 177 11 296 12 495 13 828 14 1386 15 2318 16 3879 17 6489 18 10854 19 18158 20 30375 21 50811 22 84998 23 142187 24 237853 25 397885 26 665589 27 1113411 28 1862534 29 3115683 30 5211973 31 8718687 32 14584783 33 24397699 34 40812930 35 68272636 36 114207749 37 191048868 38 319590137