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A028553 as a simple table

n a(n)
1 0
2 1
3 8
4 28
5 66
6 88
7 211
8 298
9 671
10 2126
11 2998
12 28814
13 29369
14 29998
15 63701
16 212206
17 212671
18 299998
19 636776
20 2122206
21 2861419
22 2999998
23 9443423
24 21341691
25 28862883
26 29999998
27 212325206
28 289053683
29 294127328
30 294174669
31 299999998

[0,1,8,28,66,88,211,298,671,2126,2998,28814,29369,
 29998,63701,212206,212671,299998,636776,2122206,
 2861419,2999998,9443423,21341691,28862883,
 29999998,212325206,289053683,294127328,294174669,
 299999998]

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Last modified February 25 20:52 EST 2020. Contains 332258 sequences. (Running on oeis4.)