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A236712 as a simple table

n a(n)
1 81
2 398
3 1940
4 9608
5 47952
6 237952
7 1181504
8 5866176
9 29136768
10 144679680
11 718521728
12 3568103296
13 17719157632
14 87992364672
15 436975643520
16 2170012116096
17 10776237000576
18 53514684402816
19 265754308813696
20 1319733513668736

[81,398,1940,9608,47952,237952,1181504,5866176,
 29136768,144679680,718521728,3568103296,
 17719157632,87992364672,436975643520,
 2170012116096,10776237000576,53514684402816,
 265754308813696,1319733513668736]

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Last modified October 26 08:00 EDT 2021. Contains 348267 sequences. (Running on oeis4.)