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A207557 as a simple table

n a(n)
0 1
1 1
2 3
3 12
4 64
5 420
6 3276
7 29581
8 303389
9 3483053
10 44245695
11 616103046
12 9330961666
13 152700926414
14 2685132170466
15 50488787588936
16 1010864433071206
17 21470488933116138
18 482176661100286182
19 11415700804801064258
20 284169548252819022230
21 7419733139418740010570

[1,1,3,12,64,420,3276,29581,303389,3483053,
 44245695,616103046,9330961666,152700926414,
 2685132170466,50488787588936,1010864433071206,
 21470488933116138,482176661100286182,
 11415700804801064258,284169548252819022230,
 7419733139418740010570]

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Last modified April 25 01:35 EDT 2024. Contains 371964 sequences. (Running on oeis4.)