# A037594 (b-file synthesized from sequence entry) 1 1 2 8 3 67 4 537 5 4296 6 34371 7 274969 8 2199752 9 17598019 10 140784153 11 1126273224 12 9010185795 13 72081486361 14 576651890888 15 4613215127107 16 36905721016857 17 295245768134856 18 2361966145078851