A042522 - OEIS

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A042522 as a simple table

n	a(n)
0	28
1	253
2	534
3	787
4	4469
5	5256
6	9725
7	34431
8	147449
9	181880
10	874969
11	1056849
12	5102365
13	16363944
14	21466309
15	37830253
16	210617574
17	248447827
18	707513228
19	6616066879
20	371207258452
21	3347481392947
22	7066170044346

[28,253,534,787,4469,5256,9725,34431,147449, 181880,874969,1056849,5102365,16363944,21466309, 37830253,210617574,248447827,707513228,6616066879, 371207258452,3347481392947,7066170044346]