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A306902 as a simple table

n a(n)
0 0
1 1
2 3
3 7
4 13
5 23
6 40
7 67
8 103
9 156
10 231
11 340
12 486
13 689
14 964
15 1352
16 1845
17 2507
18 3363
19 4500
20 5937
21 7814
22 10174
23 13247
24 17064
25 21930
26 27957
27 35616
28 45009
29 56805
30 71252
31 89320
32 111282
33 138479
34 171421
35 212021
36 260974
37 320837
38 392753
39 480395
40 585239
41 712163
42 863536

[0,1,3,7,13,23,40,67,103,156,231,340,486,689,964,
 1352,1845,2507,3363,4500,5937,7814,10174,13247,
 17064,21930,27957,35616,45009,56805,71252,89320,
 111282,138479,171421,212021,260974,320837,392753,
 480395,585239,712163,863536]

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Last modified January 19 00:40 EST 2020. Contains 331030 sequences. (Running on oeis4.)