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A056014 as a simple table

n a(n)
0 0
1 0
2 0
3 1
4 4
5 13
6 38
7 106
8 288
9 771
10 2046
11 5401
12 14212
13 37324
14 97904
15 256621
16 672336
17 1760997
18 4611642
19 12075526
20 31617520
21 82781215
22 216732890
23 567428401
24 1485570024
25 3889310328
26 10182407328
27 26657986681
28 69791674108

[0,0,0,1,4,13,38,106,288,771,2046,5401,14212,
 37324,97904,256621,672336,1760997,4611642,
 12075526,31617520,82781215,216732890,567428401,
 1485570024,3889310328,10182407328,26657986681,
 69791674108]

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Last modified April 19 19:02 EDT 2024. Contains 371798 sequences. (Running on oeis4.)