A024441 - OEIS

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A024441 as a simple table

n	a(n)
0	1
1	27
2	480
3	7090
4	94311
5	1173417
6	13944190
7	160292880
8	1797313221
9	19769671207
10	214195117500
11	2292743705070
12	24300717989731
13	255479745527397
14	2667841806196410
15	27701356042027660
16	286258773993179841

[1,27,480,7090,94311,1173417,13944190,160292880, 1797313221,19769671207,214195117500,2292743705070, 24300717989731,255479745527397,2667841806196410, 27701356042027660,286258773993179841]