# A095768 (b-file synthesized from sequence entry) 1 3 2 6 3 13 4 28 5 59 6 122 7 249 8 504 9 1015 10 2038 11 4085 12 8180 13 16371 14 32754 15 65521 16 131056 17 262127 18 524270 19 1048557 20 2097132 21 4194283 22 8388586 23 16777193 24 33554408 25 67108839 26 134217702 27 268435429 28 536870884 29 1073741795 30 2147483618