# A050881 (b-file synthesized from sequence entry) 1 4 2 6 3 28 4 76 5 96 6 124 7 294 8 396 9 726 10 868 11 928 12 1400 13 3056 14 6594 15 12588 16 15708 17 88576 18 144288 19 238468