# A148811 (b-file synthesized from sequence entry) 0 1 1 1 2 3 3 8 4 26 5 86 6 309 7 1108 8 4177 9 16043 10 62131 11 245624 12 988058 13 3974672 14 16249872 15 67146327 16 277391652 17 1159193515 18 4883667639 19 20554100144 20 87291612458 21 373042330747 22 1592243882405 23 6845720258023 24 29580989452406 25 127649661170533 26 554181473820419 27 2415949131968238 28 10517688992163295