# A068560 (b-file synthesized from sequence entry) 1 1 2 5 3 34 4 63 5 76 6 128 7 136 8 170 9 315 10 364 11 380 12 444 13 640 14 680 15 972 16 1820 17 1824 18 1836 19 2142 20 2220 21 4788 22 4860 23 6000 24 8064 25 8568 26 8736 27 9120 28 9180 29 10710 30 23940 31 40320 32 42840 33 43680