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A302946 as a simple table

n a(n)
1 4
2 36
3 196
4 1156
5 6724
6 39204
7 228484
8 1331716
9 7761796
10 45239076
11 263672644
12 1536796804
13 8957108164
14 52205852196
15 304278004996
16 1773462177796
17 10336495061764
18 60245508192804
19 351136554095044
20 2046573816377476
21 11928306344169796
22 69523264248641316

[4,36,196,1156,6724,39204,228484,1331716,7761796,
 45239076,263672644,1536796804,8957108164,
 52205852196,304278004996,1773462177796,
 10336495061764,60245508192804,351136554095044,
 2046573816377476,11928306344169796,
 69523264248641316]

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Last modified April 3 03:42 EDT 2020. Contains 333195 sequences. (Running on oeis4.)