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A287498 as a simple table

n a(n)
1 0
2 4
3 9
4 12
5 30
6 55
7 105
8 212
9 405
10 794
11 1551
12 3015
13 5889
14 11477
15 22374
16 43636
17 85068
18 165871
19 323418
20 630582
21 1229517
22 2397289
23 4674198
24 9113711
25 17769780
26 34647305
27 67554891
28 131717661
29 256821477
30 500747300

[0,4,9,12,30,55,105,212,405,794,1551,3015,5889,
 11477,22374,43636,85068,165871,323418,630582,
 1229517,2397289,4674198,9113711,17769780,34647305,
 67554891,131717661,256821477,500747300]

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Last modified March 28 05:02 EDT 2024. Contains 371235 sequences. (Running on oeis4.)