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A047038 as a simple table

n a(n)
0 1
1 4
2 15
3 56
4 209
5 784
6 2958
7 11220
8 42753
9 163548
10 627770
11 2416804
12 9328384
13 36087780
14 139890764
15 543246696
16 2113015731
17 8230687548
18 32102370550
19 125358442460
20 490049744789
21 1917595810240
22 7510507532319
23 29440544167696

[1,4,15,56,209,784,2958,11220,42753,163548,627770,
 2416804,9328384,36087780,139890764,543246696,
 2113015731,8230687548,32102370550,125358442460,
 490049744789,1917595810240,7510507532319,
 29440544167696]

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Last modified April 23 08:33 EDT 2024. Contains 371905 sequences. (Running on oeis4.)