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A001698 as a simple table

n a(n)
0 1
1 3
2 7
3 16
4 40
5 99
6 249
7 622
8 1559
9 3907
10 9793
11 24547
12 61529
13 154231
14 386598
15 969057
16 2429064
17 6088761
18 15262259
19 38256810
20 95895601
21 240374624
22 602529829
23 1510318306
24 3785806568
25 9489609785
26 23786924201
27 59624976769
28 149457652642
29 374634777973

[1,3,7,16,40,99,249,622,1559,3907,9793,24547,
 61529,154231,386598,969057,2429064,6088761,
 15262259,38256810,95895601,240374624,602529829,
 1510318306,3785806568,9489609785,23786924201,
 59624976769,149457652642,374634777973]

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Last modified May 3 01:16 EDT 2024. Contains 372203 sequences. (Running on oeis4.)