# A064858 (b-file synthesized from sequence entry) 1 1 2 2 3 3 4 4 5 30 6 60 7 14 8 840 9 315 10 504 11 6930 12 9240 13 180180 14 360360 15 30030 16 720720 17 2042040 18 2450448 19 10581480 20 1989680 21 58198140 22 232792560 23 1338557220 24 254963280 25 13385572200 26 26771144400 27 5736673800 28 6177956400 29 291136195350