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A299294 as a simple table

n a(n)
0 2
1 4
2 7
3 17
4 30
5 80
6 143
7 404
8 728
9 2140
10 3876
11 11729
12 21318
13 65952
14 120175
15 378321
16 690690
17 2205168
18 4032015
19 13023324
20 23841480
21 77761008
22 142498692

[2,4,7,17,30,80,143,404,728,2140,3876,11729,21318,
 65952,120175,378321,690690,2205168,4032015,
 13023324,23841480,77761008,142498692]

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Last modified June 7 14:59 EDT 2024. Contains 373202 sequences. (Running on oeis4.)