# A005113 (b-file synthesized from sequence entry) 1 2 2 13 3 37 4 73 5 1021 6 2917 7 15013 8 49681 9 532801 10 1065601 11 8524807 12 68198461 13 545587687 14 1704961513 15 23869461181 16 288310406533