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A161900 as a simple table

n a(n)
0 1
1 22
2 252
3 2002
4 12396
5 63734
6 283107
7 1116236
8 3983485
9 13057330
10 39764011
11 113533312
12 306173263
13 784654154
14 1920802566
15 4510960122
16 10201294213
17 22286443124
18 47167714715
19 96947735390
20 193938666735
21 378324531180

[1,22,252,2002,12396,63734,283107,1116236,3983485,
 13057330,39764011,113533312,306173263,784654154,
 1920802566,4510960122,10201294213,22286443124,
 47167714715,96947735390,193938666735,378324531180]

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Last modified April 25 01:35 EDT 2024. Contains 371964 sequences. (Running on oeis4.)