# A015796 (b-file synthesized from sequence entry) 1 4 2 10 3 32 4 60 5 88 6 688 7 2544 8 3424 9 12200 10 62848 11 777984 12 1037824 13 16734208 14 67022848 15 8625555968 16 51537444864 17 1099500617728