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A290405 as a simple table

n a(n)
0 1
1 27
2 324
3 2430
4 13716
5 64557
6 265356
7 983556
8 3353076
9 10670373
10 32031288
11 91455804
12 249948828
13 657261999
14 1669898592
15 4113612864
16 9853898292
17 23010586596
18 52494114852
19 117209543940
20 256559365656
21 551320914321
22 1164556135440
23 2420715030912
24 4956677613180

[1,27,324,2430,13716,64557,265356,983556,3353076,
 10670373,32031288,91455804,249948828,657261999,
 1669898592,4113612864,9853898292,23010586596,
 52494114852,117209543940,256559365656,
 551320914321,1164556135440,2420715030912,
 4956677613180]

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Last modified April 25 13:02 EDT 2024. Contains 371969 sequences. (Running on oeis4.)