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A121616 as a simple table

n a(n)
1 31
2 211
3 4651
4 61051
5 371281
6 723901
7 1803001
8 2861461
9 4329151
10 4925281
11 7086451
12 7944301
13 14835031
14 19611901
15 23382031
16 44119351
17 54664711
18 86548801
19 97792531
20 162478501
21 189882031
22 267217051
23 293109961
24 306740281
25 490099501

[31,211,4651,61051,371281,723901,1803001,2861461,
 4329151,4925281,7086451,7944301,14835031,19611901,
 23382031,44119351,54664711,86548801,97792531,
 162478501,189882031,267217051,293109961,306740281,
 490099501]

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Last modified April 19 15:34 EDT 2024. Contains 371794 sequences. (Running on oeis4.)