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A061182 as a simple table

n a(n)
0 3
1 22
2 111
3 474
4 1836
5 6666
6 23109
7 77378
8 252177
9 804228
10 2519640
11 7777860
12 23709783
13 71501422
14 213619683
15 633011454
16 1862264196
17 5443487406
18 15820188729
19 45739697306
20 131624104677
21 377157259848

[3,22,111,474,1836,6666,23109,77378,252177,804228,
 2519640,7777860,23709783,71501422,213619683,
 633011454,1862264196,5443487406,15820188729,
 45739697306,131624104677,377157259848]

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Last modified September 25 06:32 EDT 2020. Contains 337335 sequences. (Running on oeis4.)