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A356809 as a simple table

n a(n)
1 3
2 21
3 55
4 987
5 2584
6 6765
7 17711
8 46368
9 317811
10 832040
11 2178309
12 5702887
13 14930352
14 102334155
15 267914296
16 701408733
17 1836311903
18 4807526976
19 12586269025
20 32951280099
21 86267571272
22 225851433717
23 591286729879
24 1548008755920
25 10610209857723

[3,21,55,987,2584,6765,17711,46368,317811,832040,
 2178309,5702887,14930352,102334155,267914296,
 701408733,1836311903,4807526976,12586269025,
 32951280099,86267571272,225851433717,591286729879,
 1548008755920,10610209857723]

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Last modified August 20 05:46 EDT 2024. Contains 375311 sequences. (Running on oeis4.)