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A034509 as a simple table

n a(n)
1 0
2 0
3 0
4 0
5 0
6 0
7 0
8 0
9 0
10 0
11 0
12 0
13 0
14 0
15 0
16 0
17 0
18 0
19 0
20 0
21 0
22 0
23 0
24 0
25 0
26 0
27 1
28 5
29 13
30 34
31 75
32 163
33 332
34 668
35 1286
36 2461
37 4581
38 8481
39 15453
40 28080
41 50585
42 91232
43 164306
44 297772
45 543111
46 1003584
47 1881618
48 3598204
49 7025278
50 14035510
51 28658535

[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
 0,0,1,5,13,34,75,163,332,668,1286,2461,4581,8481,
 15453,28080,50585,91232,164306,297772,543111,
 1003584,1881618,3598204,7025278,14035510,28658535]

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Last modified January 16 19:48 EST 2022. Contains 350376 sequences. (Running on oeis4.)