A050845 - OEIS

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A050845 as a simple table

n	a(n)
1	1
2	17
3	21
4	53
5	253
6	2173
7	3313
8	5197
9	5333
10	6929
11	28017
12	40429
13	47877
14	80617
15	110513
16	139673
17	141201
18	263093
19	379649
20	483153

[1,17,21,53,253,2173,3313,5197,5333,6929,28017, 40429,47877,80617,110513,139673,141201,263093, 379649,483153]