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A081113 as a simple table

n a(n)
1 1
2 4
3 17
4 68
5 259
6 950
7 3387
8 11814
9 40503
10 136946
11 457795
12 1515926
13 4979777
14 16246924
15 52694573
16 170028792
17 546148863
18 1747255194
19 5569898331
20 17698806798
21 56076828573
22 177208108824
23 558658899825
24 1757365514652

[1,4,17,68,259,950,3387,11814,40503,136946,457795,
 1515926,4979777,16246924,52694573,170028792,
 546148863,1747255194,5569898331,17698806798,
 56076828573,177208108824,558658899825,
 1757365514652]

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Last modified April 24 22:17 EDT 2024. Contains 371964 sequences. (Running on oeis4.)