# A046690 (b-file synthesized from sequence entry) 1 1 2 2 3 2 4 8 5 12 6 5 7 42 8 84 9 56 10 14 11 262 12 640 13 580 14 240 15 42 16 1828 17 5236 18 5894 19 3344 20 990