# A084415 (b-file synthesized from sequence entry) 3 4 4 12 5 8 6 24 7 15 8 12 9 24 10 60 11 16 12 84 13 48 14 20 15 30 16 144 17 24 18 180 19 21 20 28 21 120 22 264 23 32 24 60