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A317378 as a simple table

n a(n)
1 4
2 5
3 18
4 36
5 94
6 270
7 731
8 1973
9 5388
10 14732
11 40185
12 109622
13 299224
14 816737
15 2229029
16 6083625
17 16604273
18 45318395
19 123687970
20 337583521
21 921372891
22 2514718793
23 6863464096
24 18732569928
25 51127124540
26 139542134747
27 380854732742

[4,5,18,36,94,270,731,1973,5388,14732,40185,
 109622,299224,816737,2229029,6083625,16604273,
 45318395,123687970,337583521,921372891,2514718793,
 6863464096,18732569928,51127124540,139542134747,
 380854732742]

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Last modified January 26 18:26 EST 2022. Contains 350599 sequences. (Running on oeis4.)