A090957 - OEIS

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A090957 as a simple table

n	a(n)
0	1
1	30
2	495
3	7280
4	101745
5	1381380
6	18407025
7	242082720
8	3153092085
9	40763504210
10	523886186670
11	6700599687600
12	85360889543475
13	1083790852008480
14	13721016740550360
15	173280964190422080
16	2183615911571190525

[1,30,495,7280,101745,1381380,18407025,242082720, 3153092085,40763504210,523886186670,6700599687600, 85360889543475,1083790852008480,13721016740550360, 173280964190422080,2183615911571190525]