# A176776 (b-file synthesized from sequence entry) 0 1 1 3 2 4 3 5 4 8 5 17 6 40 7 93 8 208 9 449 10 944 11 1949 12 3976 13 8049 14 16216 15 32573 16 65312 17 130817 18 261856 19 523965 20 1048216 21 2096753 22 4193864 23 8388125 24 16776688 25 33553857 26 67108240 27 134217053 28 268434728 29 536870129 30 1073740984 31 2147482749