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A048757 as a simple table

n a(n)
0 1
1 4
2 9
3 33
4 56
5 203
6 441
7 1596
8 2585
9 9353
10 20304
11 73461
12 124033
13 448756
14 974169
15 3524577
16 5702888
17 20633243
18 44791065
19 162055596
20 273617239
21 989956471
22 2149017696
23 7775219067
24 12591974497
25 45558191716
26 98898651657

[1,4,9,33,56,203,441,1596,2585,9353,20304,73461,
 124033,448756,974169,3524577,5702888,20633243,
 44791065,162055596,273617239,989956471,2149017696,
 7775219067,12591974497,45558191716,98898651657]

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Last modified January 22 18:06 EST 2019. Contains 319365 sequences. (Running on oeis4.)