# A295043 (b-file synthesized from sequence entry) 0 1 1 0 2 3 3 7 4 0 5 31 6 0 7 127 8 217 9 381 10 889 11 0 12 3937 13 8191 14 11811 15 27559 16 57337 17 131071 18 253921 19 524287 20 1040257 21 1777447 22 4063201 23 7281799 24 16646017 25 32247967 26 66584449 27 116522119 28 225735769 29 516026527 30 1073602561 31 2147483647 32 4294434817 33 7515217927 34 15032385529