# A074027 (b-file synthesized from sequence entry) 1 1 2 0 3 0 4 0 5 1 6 2 7 5 8 8 9 15 10 24 11 45 12 80 13 155 14 288 15 550 16 1024 17 1935 18 3626 19 6885 20 13056 21 24940 22 47616 23 91225 24 174760 25 335626 26 645120 27 1242600 28 2396160 29 4627915 30 8947294 31 17318945 32 33554432 33 65076240 34 126320640 35 245424829 36 477211280 37 928638035 38 1808400384 39 3524082400