# A118041 (b-file synthesized from sequence entry) 0 1 1 2 2 6 3 16 4 44 5 116 6 294 7 748 8 1794 9 4352 10 10072 11 23496 12 52862 13 118820 14 261214 15 569604 16 1228220 17 2601164 18 5495022 19 11344842 20 23610090 21 47656726 22 97354662 23 192295578 24 388117650 25 753393744 26 1495849616 27 2851455044 28 5606303284