# A117590 (b-file synthesized from sequence entry) 1 2 2 3 3 5 4 7 5 11 6 16 7 23 8 35 9 52 10 77 11 116 12 173 13 260 14 390 15 584 16 876 17 1314 18 1971 19 2956 20 4434 21 6651 22 9976 23 14964 24 22446 25 33669 26 50503 27 75754 28 113631 29 170446 30 255669 31 383503 32 575254 33 862880 34 1294320 35 1941480 36 2912220 37 4368329 38 6552494 39 9828740 40 14743110