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A261347 as a simple table

n a(n)
1 0
2 0
3 5
4 26
5 84
6 222
7 488
8 946
9 1664
10 2723
11 4227
12 6277
13 8993
14 12514
15 16976
16 22538
17 29364
18 37649
19 47563
20 59321
21 73149
22 89254
23 107892
24 129308
25 153764
26 181547
27 212931
28 248223
29 287747
30 331780

[0,0,5,26,84,222,488,946,1664,2723,4227,6277,8993,
 12514,16976,22538,29364,37649,47563,59321,73149,
 89254,107892,129308,153764,181547,212931,248223,
 287747,331780]

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Last modified May 23 18:42 EDT 2017. Contains 286926 sequences.