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A227249 as a simple table

n a(n)
1 1
2 4
3 6
4 21
5 80
6 4151
7 6982
8 269563
9 779693
10 834365
11 16176645
12 19770092
13 41049539
14 228612936
15 1950787140
16 2404785364
17 3095996836
18 5236785750

[1,4,6,21,80,4151,6982,269563,779693,834365,
 16176645,19770092,41049539,228612936,1950787140,
 2404785364,3095996836,5236785750]

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Last modified June 4 14:25 EDT 2024. Contains 373099 sequences. (Running on oeis4.)