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A185940 as a simple table

n a(n)
1 24
2 74
3 228
4 698
5 2124
6 6434
7 19428
8 58538
9 176124
10 529394
11 1590228
12 4774778
13 14332524
14 43013954
15 129074628
16 387289418
17 1161999324
18 3486260114
19 10459304628
20 31378962458
21 94138984524
22 282421147874
23 847271832228
24 2541832273898
25 7625530376124
26 22876658237234

[24,74,228,698,2124,6434,19428,58538,176124,
 529394,1590228,4774778,14332524,43013954,
 129074628,387289418,1161999324,3486260114,
 10459304628,31378962458,94138984524,282421147874,
 847271832228,2541832273898,7625530376124,
 22876658237234]

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Last modified July 25 16:03 EDT 2021. Contains 346291 sequences. (Running on oeis4.)