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A190584 as a simple table

n a(n)
1 4
2 27
3 119
4 497
5 2023
6 8149
7 32692
8 130938
9 524050
10 2096730
11 8387859
12 33553102
13 134215364
14 536866711
15 2147476180
16 8589921317
17 34359714770
18 137438911520
19 549755739309
20 2199023122967
21 8796092786503
22 35184371669802
23 140737487610388
24 562949952096975

[4,27,119,497,2023,8149,32692,130938,524050,
 2096730,8387859,33553102,134215364,536866711,
 2147476180,8589921317,34359714770,137438911520,
 549755739309,2199023122967,8796092786503,
 35184371669802,140737487610388,562949952096975]

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Last modified April 24 20:08 EDT 2024. Contains 371963 sequences. (Running on oeis4.)