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A209486 as a simple table

n a(n)
1 4
2 38
3 140
4 390
5 866
6 1702
7 3014
8 4984
9 7774
10 11620
11 16716
12 23352
13 31768
14 42302
15 55232
16 70950
17 89774
18 112150
19 138434
20 169120
21 204610
22 245452
23 292080
24 345096
25 404980
26 472382
27 547820
28 631998
29 725474
30 829006
31 943190
32 1068832
33 1206574

[4,38,140,390,866,1702,3014,4984,7774,11620,16716,
 23352,31768,42302,55232,70950,89774,112150,138434,
 169120,204610,245452,292080,345096,404980,472382,
 547820,631998,725474,829006,943190,1068832,
 1206574]

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Last modified October 28 11:38 EDT 2021. Contains 348329 sequences. (Running on oeis4.)