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A074556 as a simple table

n a(n)
0 3
1 17
2 109
3 755
4 5473
5 40787
6 309529
7 2379275
8 18463393
9 144315107
10 1134267049
11 8952908795
12 70896790513
13 562818102227
14 4476415458169
15 35654571422315
16 284296129664833
17 2268726602270147
18 18115958853570889
19 144724548978127835

[3,17,109,755,5473,40787,309529,2379275,18463393,
 144315107,1134267049,8952908795,70896790513,
 562818102227,4476415458169,35654571422315,
 284296129664833,2268726602270147,
 18115958853570889,144724548978127835]

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Last modified April 25 01:35 EDT 2024. Contains 371964 sequences. (Running on oeis4.)