# A237650 (b-file synthesized from sequence entry) 0 1 1 3 2 12 3 25 4 75 5 144 6 357 7 615 8 1380 9 2285 10 4767 11 7488 12 14817 13 22707 14 43068 15 63769 16 116667 17 169584 18 301589 19 427815 20 741396 21 1037149 22 1761087 23 2418432 24 4025153 25 5465955 26 8956716 27 11986009 28 19330347 29 25633296 30 40835973 31 53508711 32 84129156 33 109392269 34 170278047 35 219206976