# A014169 (b-file synthesized from sequence entry) 1 1 2 4 3 11 4 25 5 51 6 98 7 182 8 331 9 595 10 1063 11 1894 12 3373 13 6010 14 10719 15 19139 16 34208 17 61195 18 109551 19 196228 20 351636 21 630330 22 1130181 23 2026775 24 3635128 25 6520408 26 11696591 27 20982875 28 37643135 29 67533204