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A004080 as a simple table

n a(n)
0 0
1 1
2 4
3 11
4 31
5 83
6 227
7 616
8 1674
9 4550
10 12367
11 33617
12 91380
13 248397
14 675214
15 1835421
16 4989191
17 13562027
18 36865412
19 100210581
20 272400600
21 740461601
22 2012783315
23 5471312310
24 14872568831
25 40427833596
26 109894245429
27 298723530401
28 812014744422

[0,1,4,11,31,83,227,616,1674,4550,12367,33617,
 91380,248397,675214,1835421,4989191,13562027,
 36865412,100210581,272400600,740461601,2012783315,
 5471312310,14872568831,40427833596,109894245429,
 298723530401,812014744422]

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Last modified March 28 16:58 EDT 2024. Contains 371254 sequences. (Running on oeis4.)