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A009881 as a simple table

n a(n)
0 1
1 4
2 7
3 17
4 31
5 49
6 76
7 98
8 125
9 170
10 208
11 242
12 293
13 354
14 404
15 447
16 526
17 605
18 655
19 750
20 842
21 880
22 978
23 1114
24 1178
25 1264
26 1413
27 1501
28 1591
29 1757
30 1866
31 1940
32 2104
33 2272
34 2369
35 2510
36 2691
37 2808
38 2958
39 3157
40 3300
41 3443
42 3628
43 3834
44 3997
45 4136
46 4368
47 4566

[1,4,7,17,31,49,76,98,125,170,208,242,293,354,404,
 447,526,605,655,750,842,880,978,1114,1178,1264,
 1413,1501,1591,1757,1866,1940,2104,2272,2369,2510,
 2691,2808,2958,3157,3300,3443,3628,3834,3997,4136,
 4368,4566]

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