# A187893 (b-file synthesized from sequence entry) 0 1 1 4 2 4 3 7 4 10 5 16 6 25 7 40 8 64 9 103 10 166 11 268 12 433 13 700 14 1132 15 1831 16 2962 17 4792 18 7753 19 12544 20 20296 21 32839 22 53134 23 85972 24 139105 25 225076 26 364180 27 589255 28 953434 29 1542688 30 2496121 31 4038808 32 6534928 33 10573735 34 17108662 35 27682396 36 44791057 37 72473452 38 117264508