# A072067 (b-file synthesized from sequence entry) 1 2 2 4 3 8 4 16 5 32 6 64 7 128 8 256 9 512 10 32 11 45 12 64 13 90 14 128 15 181 16 256 17 362 18 64 19 80 20 101 21 128