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A017920 as a simple table

n a(n)
0 1
1 2
2 5
3 11
4 25
5 56
6 125
7 280
8 625
9 1398
10 3125
11 6988
12 15625
13 34939
14 78125
15 174693
16 390625
17 873464
18 1953125
19 4367320
20 9765625
21 21836601
22 48828125
23 109183007
24 244140625
25 545915034
26 1220703125
27 2729575168

[1,2,5,11,25,56,125,280,625,1398,3125,6988,15625,
 34939,78125,174693,390625,873464,1953125,4367320,
 9765625,21836601,48828125,109183007,244140625,
 545915034,1220703125,2729575168]

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Last modified March 28 09:04 EDT 2024. Contains 371240 sequences. (Running on oeis4.)