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A024430 as a simple table

n a(n)
0 1
1 0
2 1
3 3
4 8
5 25
6 97
7 434
8 2095
9 10707
10 58194
11 338195
12 2097933
13 13796952
14 95504749
15 692462671
16 5245040408
17 41436754261
18 340899165549
19 2915100624274
20 25857170687507
21 237448494222575
22 2253720620740362
23 22078799199129799
24 222987346441156585
25 2319210969809731600

[1,0,1,3,8,25,97,434,2095,10707,58194,338195,
 2097933,13796952,95504749,692462671,5245040408,
 41436754261,340899165549,2915100624274,
 25857170687507,237448494222575,2253720620740362,
 22078799199129799,222987346441156585,
 2319210969809731600]

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Last modified June 24 05:21 EDT 2019. Contains 324318 sequences. (Running on oeis4.)