# A176362 (b-file synthesized from sequence entry) 1 1 2 7 3 28 4 63 5 186 6 508 7 1016 8 2047 9 6643 10 12282 11 24564 12 65532 13 114674 14 262136 15 786408 16 1048575 17 2359278 18 6815731 19 10485740 20 25165818 21 67108832 22 100663284 23 201326568 24 536870908 25 1040187361 26 1879048178 27 5368709080 28 8589934584