# A177378 (b-file synthesized from sequence entry) 1 11 2 13 3 3 4 29 5 31 6 251 7 127 8 509 9 1021 10 4091 11 4093 12 65519 13 8191 14 131063 15 262133 16 262139 17 131071 18 1048571 19 524287 20 8388593 21 4194301 22 67108837 23 16777213 24 67108861 25 1073741789 26 2147483587 27 2147483629 28 536870909