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A217340 as a simple table

n a(n)
1 0
2 1
3 7
4 38
5 190
6 918
7 4367
8 20623
9 97052
10 455960
11 2140404
12 10043697
13 47120343
14 221046178
15 1036902766
16 4863888050
17 22815211759
18 107019570351
19 501996648392
20 2354712588592
21 11045229346424
22 51809744028497
23 243023401329015

[0,1,7,38,190,918,4367,20623,97052,455960,2140404,
 10043697,47120343,221046178,1036902766,4863888050,
 22815211759,107019570351,501996648392,
 2354712588592,11045229346424,51809744028497,
 243023401329015]

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Last modified June 15 22:50 EDT 2024. Contains 373412 sequences. (Running on oeis4.)