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A001891 as a simple table

n a(n)
0 0
1 1
2 4
3 10
4 21
5 40
6 72
7 125
8 212
9 354
10 585
11 960
12 1568
13 2553
14 4148
15 6730
16 10909
17 17672
18 28616
19 46325
20 74980
21 121346
22 196369
23 317760
24 514176
25 831985
26 1346212
27 2178250
28 3524517
29 5702824
30 9227400
31 14930285
32 24157748
33 39088098
34 63245913
35 102334080
36 165580064

[0,1,4,10,21,40,72,125,212,354,585,960,1568,2553,
 4148,6730,10909,17672,28616,46325,74980,121346,
 196369,317760,514176,831985,1346212,2178250,
 3524517,5702824,9227400,14930285,24157748,
 39088098,63245913,102334080,165580064]

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Last modified April 25 11:39 EDT 2024. Contains 371969 sequences. (Running on oeis4.)