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A027618 as a simple table

n a(n)
0 1
1 4
2 19
3 94
4 481
5 2524
6 13483
7 72958
8 398593
9 2193844
10 12146179
11 67570078
12 377393953
13 2114900428
14 11885772379
15 66963572734
16 378082854913
17 2138752086628
18 12118975586803
19 68774144872414
20 390815720696161
21 2223564321341884

[1,4,19,94,481,2524,13483,72958,398593,2193844,
 12146179,67570078,377393953,2114900428,
 11885772379,66963572734,378082854913,
 2138752086628,12118975586803,68774144872414,
 390815720696161,2223564321341884]

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Last modified April 25 09:28 EDT 2024. Contains 371967 sequences. (Running on oeis4.)