# A080557 (b-file synthesized from sequence entry) 0 3 1 9 2 27 3 81 4 225 5 507 6 912 7 1236 8 1587 9 1782 10 1977 11 2046 12 2070 13 1947 14 1680 15 1275 16 951 17 600 18 402 19 201 20 114 21 36 22 15