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A018903 as a simple table

n a(n)
0 1
1 5
2 26
3 136
4 712
5 3728
6 19520
7 102208
8 535168
9 2802176
10 14672384
11 76825600
12 402264064
13 2106281984
14 11028635648
15 57746685952
16 302365573120
17 1583206694912
18 8289777876992
19 43405840482304
20 227275931385856
21 1190032226385920
22 6231089632772096
23 32626408891088896

[1,5,26,136,712,3728,19520,102208,535168,2802176,
 14672384,76825600,402264064,2106281984,
 11028635648,57746685952,302365573120,
 1583206694912,8289777876992,43405840482304,
 227275931385856,1190032226385920,6231089632772096,
 32626408891088896]

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Last modified April 25 13:44 EDT 2024. Contains 371975 sequences. (Running on oeis4.)