# A072837 (b-file synthesized from sequence entry) 0 1 1 0 2 0 3 0 4 0 5 12 6 0 7 0 8 30 9 20 10 0 11 0 12 30 13 0 14 0 15 0 16 0 17 120 18 0 19 0 20 132 21 60 22 0 23 0 24 90 25 0 26 0 27 0 28 0 29 180