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A160613 as a simple table

n a(n)
0 1
1 4
2 23
3 28
4 491
5 1249
6 19223
7 15476
8 3515161
9 1512661
10 14496817
11 228800107
12 11770539419
13 60428965661
14 5262254717509
15 2521163372543
16 976843770850217
17 887131806309703
18 73511154681979031
19 255777165814872577

[1,4,23,28,491,1249,19223,15476,3515161,1512661,
 14496817,228800107,11770539419,60428965661,
 5262254717509,2521163372543,976843770850217,
 887131806309703,73511154681979031,
 255777165814872577]

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Last modified January 31 18:34 EST 2023. Contains 359980 sequences. (Running on oeis4.)