# A262841 (b-file synthesized from sequence entry) 0 0 1 0 2 1 3 2 4 3 5 5 6 8 7 11 8 21 9 28 10 54 11 68 12 135 13 183 14 360 15 470 16 948 17 1234 18 2479 19 3294 20 6531 21 8713 22 17120 23 23200