# A068038 (b-file synthesized from sequence entry) 0 1 1 1 2 1 3 1 4 1 5 1 6 3 7 8 8 15 9 30 10 60 11 120 12 241 13 482 14 964 15 1928 16 3856 17 7712 18 15422 19 30842 20 61682 21 123362 22 246722 23 493446 24 986896 25 1973790 26 3947580 27 7895160 28 15790320 29 31580642 30 63161284 31 126322568 32 252645136 33 505290272 34 1010580544 35 2021161084