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A298173 as a simple table

n a(n)
0 1
1 4
2 16
3 50
4 155
5 468
6 1410
7 4234
8 12709
9 38132
10 114404
11 343218
12 1029663
13 3088997
14 9267001
15 27801012
16 83403047
17 250209151
18 750627465
19 2251882406
20 6755647231
21 20266941705
22 60800825129
23 182402475400
24 547207426215
25 1641622278659
26 4924866835993
27 14774600507994

[1,4,16,50,155,468,1410,4234,12709,38132,114404,
 343218,1029663,3088997,9267001,27801012,83403047,
 250209151,750627465,2251882406,6755647231,
 20266941705,60800825129,182402475400,547207426215,
 1641622278659,4924866835993,14774600507994]

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Last modified June 20 16:57 EDT 2021. Contains 345176 sequences. (Running on oeis4.)