# A002568 (b-file synthesized from sequence entry) 1 1 2 4 3 1 4 16 5 16 6 120 7 8 8 728 9 92 10 8 11 2 12 840 13 24 14 436 15 10188 16 128 17 12 18 224 19 8424 20 312 21 72 22 192 23 8784 24 368 25 56 26 224 27 14500 28 280 29 10880 30 240