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A056315 as a simple table

n a(n)
1 4
2 6
3 36
4 126
5 540
6 2034
7 8316
8 32760
9 131544
10 524250
11 2099196
12 8388450
13 33562620
14 134217594
15 536903100
16 2147483520
17 8590065660
18 34359735816
19 137439477756
20 549755813250
21 2199025344348
22 8796093020154

[4,6,36,126,540,2034,8316,32760,131544,524250,
 2099196,8388450,33562620,134217594,536903100,
 2147483520,8590065660,34359735816,137439477756,
 549755813250,2199025344348,8796093020154]

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Last modified August 27 08:13 EDT 2024. Contains 375462 sequences. (Running on oeis4.)