# A067027 (b-file synthesized from sequence entry) 1 1 2 2 3 3 4 4 5 6 6 10 7 11 8 12 9 15 10 17 11 29 12 48 13 63 14 77 15 88 16 187 17 190 18 338 19 1133 20 1311 21 1832 22 2782 23 2907 24 3180 25 3272 26 5398 27 17530