A042588 - OEIS

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A042588 as a simple table

n	a(n)
0	28
1	29
2	86
3	373
4	459
5	3586
6	7631
7	11217
8	18848
9	30065
10	48913
11	421369
12	470282
13	8886445
14	36016062
15	80918569
16	116934631
17	431722462
18	980379555
19	2392481572
20	12942787415
21	15335268987
22	426995050064
23	442330319051

[28,29,86,373,459,3586,7631,11217,18848,30065, 48913,421369,470282,8886445,36016062,80918569, 116934631,431722462,980379555,2392481572, 12942787415,15335268987,426995050064,442330319051]