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A192468 as a simple table

n a(n)
1 4
2 16
3 61
4 304
5 1546
6 8107
7 42748
8 226240
9 1198645
10 6353944
11 33688474
12 178631251
13 947215924
14 5022815920
15 26634734125
16 141237718720
17 748951245034
18 3971518837243
19 21060069709228
20 111676816254688
21 592197081386533
22 3140288211876136

[4,16,61,304,1546,8107,42748,226240,1198645,
 6353944,33688474,178631251,947215924,5022815920,
 26634734125,141237718720,748951245034,
 3971518837243,21060069709228,111676816254688,
 592197081386533,3140288211876136]

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Last modified May 4 21:18 EDT 2024. Contains 372257 sequences. (Running on oeis4.)