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A014280 as a simple table

n a(n)
0 0
1 1
2 1
3 2
4 3
5 6
6 12
7 28
8 64
9 152
10 363
11 883
12 2165
13 5375
14 13439
15 33885
16 85960
17 219398
18 562768
19 1450356
20 3753054
21 9748390
22 25406262
23 66419263
24 174128256
25 457690900
26 1205900244
27 3184274398
28 8425557609
29 22336457078
30 59319973057

[0,1,1,2,3,6,12,28,64,152,363,883,2165,5375,13439,
 33885,85960,219398,562768,1450356,3753054,9748390,
 25406262,66419263,174128256,457690900,1205900244,
 3184274398,8425557609,22336457078,59319973057]

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Last modified October 21 01:18 EDT 2019. Contains 328291 sequences. (Running on oeis4.)