# A147757 (b-file synthesized from sequence entry) 1 1 2 11 3 101 4 1001 5 10101 6 101101 7 1011101 8 10111101 9 101111101 10 1011111101 11 10111111101 12 101111111101 13 1011111111101 14 10111111111101 15 101111111111101 16 1011111111111101 17 10111111111111101 18 101111111111111101