# A295142 (b-file synthesized from sequence entry) 0 1 1 3 2 9 3 25 4 64 5 159 6 389 7 945 8 2289 9 5534 10 13369 11 32285 12 77953 13 188206 14 454381 15 1096985 16 2648369 17 6393742 18 15435873 19 37265509 20 89966913 21 217199358 22 524365653 23 1265930690