# A114001 (b-file synthesized from sequence entry) 1 1 2 3 3 5 4 9 5 25 6 33 7 65 8 225 9 257 10 513 11 1665 12 2049 13 5121 14 12801 15 16385 16 32769 17 100353 18 180225 19 262145 20 794625 21 1048577 22 2097153 23 7634945 24 8388609 25 18874369 26 50462721 27 67108865 28 171966465 29 403177473 30 536870913 31 1073741825