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A074550 as a simple table

n a(n)
0 3
1 15
2 89
3 603
4 4433
5 34035
6 266969
7 2115723
8 16849313
9 134499555
10 1074849449
11 8594306043
12 68736785393
13 549824517075
14 4398319729529
15 35185460179563
16 281479314724673
17 2251817122694595
18 18014467616379209
19 144115464116024283

[3,15,89,603,4433,34035,266969,2115723,16849313,
 134499555,1074849449,8594306043,68736785393,
 549824517075,4398319729529,35185460179563,
 281479314724673,2251817122694595,
 18014467616379209,144115464116024283]

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Last modified April 24 08:43 EDT 2024. Contains 371927 sequences. (Running on oeis4.)