# A211997 (b-file synthesized from sequence entry) 1 2 2 3 3 7 4 23 5 31 6 127 7 127 8 383 9 991 10 2039 11 3583 12 6143 13 8191 14 63487 15 63487 16 129023 17 131071 18 522239 19 524287 20 1966079 21 4128767 22 14680063 23 14680063 24 33546239 25 67108351 26 201064447 27 260046847 28 536739839 29 1073479679 30 2147483647 31 2147483647 32 8581545983 33 16911433727 34 32212254719