# A006553 (b-file synthesized from sequence entry) 1 1 2 2 3 6 4 10 5 18 6 40 7 46 8 86 9 118 10 170 11 1172 12 1698 13 1810 14 2268 15 4338 16 18362 17 72662 18 88392 19 94110 20 161538 21 168660 22 292340 23 401208 24 560750 25 1035092