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A299670 as a simple table

n a(n)
1 4
2 26
3 94
4 372
5 1512
6 6133
7 24742
8 100035
9 404608
10 1636222
11 6616385
12 26756052
13 108199516
14 437548895
15 1769407046
16 7155326538
17 28935512224
18 117012660592
19 473188897749
20 1913534302589
21 7738164499878
22 31292456968931
23 126543945261462

[4,26,94,372,1512,6133,24742,100035,404608,
 1636222,6616385,26756052,108199516,437548895,
 1769407046,7155326538,28935512224,117012660592,
 473188897749,1913534302589,7738164499878,
 31292456968931,126543945261462]

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Last modified April 1 13:29 EDT 2023. Contains 361695 sequences. (Running on oeis4.)