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A128639 as a simple table

n a(n)
0 1
1 8
2 40
3 152
4 488
5 1392
6 3640
7 8896
8 20584
9 45512
10 96816
11 199200
12 398072
13 775216
14 1475264
15 2749776
16 5029736
17 9043344
18 16005352
19 27918304
20 48047280
21 81661504
22 137183136
23 227952960
24 374924152
25 610743224
26 985891568
27 1577869784
28 2504850112
29 3945854640
30 6170415888

[1,8,40,152,488,1392,3640,8896,20584,45512,96816,
 199200,398072,775216,1475264,2749776,5029736,
 9043344,16005352,27918304,48047280,81661504,
 137183136,227952960,374924152,610743224,985891568,
 1577869784,2504850112,3945854640,6170415888]

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Last modified April 23 15:04 EDT 2024. Contains 371914 sequences. (Running on oeis4.)