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A028468 as a simple table

n a(n)
0 1
1 1
2 13
3 41
4 281
5 1183
6 6728
7 31529
8 167089
9 817991
10 4213133
11 21001799
12 106912793
13 536948224
14 2720246633
15 13704300553
16 69289288909
17 349519610713
18 1765722581057
19 8911652846951
20 45005025662792
21 227191499132401
22 1147185247901449
23 5791672851807479

[1,1,13,41,281,1183,6728,31529,167089,817991,
 4213133,21001799,106912793,536948224,2720246633,
 13704300553,69289288909,349519610713,
 1765722581057,8911652846951,45005025662792,
 227191499132401,1147185247901449,5791672851807479]

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Last modified April 25 03:15 EDT 2024. Contains 371964 sequences. (Running on oeis4.)