# A183112 (b-file synthesized from sequence entry) 0 0 1 1 2 4 3 13 4 38 5 113 6 336 7 1001 8 2994 9 8965 10 26868 11 80565 12 241630 13 724793 14 2174232 15 6522465 16 19567050 17 58700621 18 176101052 19 528301933 20 1584903926 21 4754708929 22 14264122464 23 42792360793 24 128377072354 25 385131201813 26 1155393582212 27 3466180711333 28 10398542080270