# A099590 (b-file synthesized from sequence entry) 1 0 2 4 3 14 4 32 5 77 6 192 7 452 8 1024 9 2299 10 5120 11 11270 12 24576 13 53241 14 114688 15 245768 16 524288 17 1114103 18 2359296 19 4980746 20 10485760 21 22020085 22 46137344 23 96469004 24 201326592 25 419430387 26 872415232 27 1811939342 28 3758096384 29 7784628209