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A077995 as a simple table

n a(n)
0 1
1 1
2 4
3 11
4 31
5 88
6 249
7 705
8 1996
9 5651
10 15999
11 45296
12 128241
13 363073
14 1027924
15 2910235
16 8239391
17 23327176
18 66043369
19 186980481
20 529374876
21 1498754083
22 4243238399
23 12013359840
24 34011950561
25 96293859201
26 272624979364
27 771849627691
28 2185243073311
29 6186810381368

[1,1,4,11,31,88,249,705,1996,5651,15999,45296,
 128241,363073,1027924,2910235,8239391,23327176,
 66043369,186980481,529374876,1498754083,
 4243238399,12013359840,34011950561,96293859201,
 272624979364,771849627691,2185243073311,
 6186810381368]

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Last modified September 21 11:18 EDT 2019. Contains 327253 sequences. (Running on oeis4.)