A047979 - OEIS

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A047979 as a simple table

n	a(n)
1	19
2	73
3	883
4	2593
5	180001
6	206083
7	388963
8	2268451
9	2836963
10	3612673
11	6329683
12	6415363
13	10342153
14	18800713
15	28486153
16	32080051
17	40878883
18	89753203
19	97050313
20	127552393
21	154844803
22	183169801
23	230953033

[19,73,883,2593,180001,206083,388963,2268451, 2836963,3612673,6329683,6415363,10342153,18800713, 28486153,32080051,40878883,89753203,97050313, 127552393,154844803,183169801,230953033]