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A005544 as a simple table

n a(n)
2 2
3 18
4 136
5 1030
6 7992
7 63796
8 522474
9 4369840
10 37179840
11 320861342
12 2802304988
13 24725041598
14 220077128644
15 1973963065574 

[2,18,136,1030,7992,63796,522474,4369840,37179840,
 320861342,2802304988,24725041598,220077128644,
 1973963065574]

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Last modified May 14 00:47 EDT 2024. Contains 372528 sequences. (Running on oeis4.)