# A369481 (b-file synthesized from sequence entry) 0 1 1 2 2 5 3 15 4 51 5 187 6 718 7 2844 8 11530 9 47612 10 199576 11 847013 12 3632468 13 15717041 14 68527255 15 300780438 16 1327939406 17 5893299392 18 26275243626 19 117635107818 20 528631769323 21 2383660351991 22 10781500113896 23 48903885040638 24 222400899237943 25 1013841791472632