A234223 - OEIS

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A234223 as a simple table

n	a(n)
1	7696
2	20724
3	56936
4	167688
5	503272
6	1597896
7	5162984
8	17479656
9	60126376
10	215032104
11	779519336
12	2918196648
13	11040350632
14	42883189416
15	167792882024
16	670921667496
17	2694321027496
18	11019119460264
19	45144426968936

[7696,20724,56936,167688,503272,1597896,5162984, 17479656,60126376,215032104,779519336,2918196648, 11040350632,42883189416,167792882024,670921667496, 2694321027496,11019119460264,45144426968936]