# A375235 (b-file synthesized from sequence entry) 1 1 2 6 3 12 4 28 5 58 6 126 7 252 8 506 9 1012 10 2042 11 4082 12 8190 13 16366 14 32742 15 65518 16 131056 17 262114 18 524280 19 1048554 20 2097146 21 4194278 22 8388594 23 16777208 24 33554390 25 67108858 26 134217716 27 268435396 28 536870852 29 1073741814 30 2147483614 31 4294967284 32 8589934580 33 17179869158