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A299340 as a simple table

n a(n)
1 4
2 26
3 93
4 357
5 1399
6 5513
7 21642
8 85000
9 333982
10 1312528
11 5157620
12 20267541
13 79645105
14 312982976
15 1229932727
16 4833285319
17 18993441447
18 74638863658
19 293309650948
20 1152624126059
21 4529487480525
22 17799607536492
23 69947434367408

[4,26,93,357,1399,5513,21642,85000,333982,1312528,
 5157620,20267541,79645105,312982976,1229932727,
 4833285319,18993441447,74638863658,293309650948,
 1152624126059,4529487480525,17799607536492,
 69947434367408]

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Last modified March 31 00:51 EDT 2023. Contains 361623 sequences. (Running on oeis4.)