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A154021 as a simple table

n a(n)
1 0
2 4
3 64
4 1020
5 16256
6 259076
7 4128960
8 65804284
9 1048739584
10 16714029060
11 266375725376
12 4245297576956
13 67658385505920
14 1078288870517764
15 17184963542778304
16 273881127813935100
17 4364913081480183296

[0,4,64,1020,16256,259076,4128960,65804284,
 1048739584,16714029060,266375725376,4245297576956,
 67658385505920,1078288870517764,17184963542778304,
 273881127813935100,4364913081480183296]

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Last modified April 20 04:51 EDT 2024. Contains 371798 sequences. (Running on oeis4.)