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This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A039928 Sum of first n terms of A_n (using absolute values of terms).

Table of values

n a(n)
1 0
2 3
3 3
4 0
5 10
6 12
7 1
8 24
9 25
10 32
11 116
12 12
13 412
14 109
15 126
16 2389
17 12497
18 28772
19 126
20 72795
21 247786
22 770213
23 159378001963452599318
24 2169128
25 442
26 311
27 378
28 789
29 10015050
30 75
31 74253544
32 7881195
33 2461717833658872781238383813854943728
34 51
35 17
36 824
37 855
38 2
39 29981
40 3087
41 215308
42 123456790123456790123456790123456790123452
43 132813776
44 1086162642
45 1836311902
46 400276874544

List of values

[0, 3, 3, 0, 10, 12, 1, 24, 25, 32, 116, 12, 412, 109, 126, 2389, 12497, 28772, 126, 72795, 247786, 770213, 159378001963452599318, 2169128, 442, 311, 378, 789, 10015050, 75, 74253544, 7881195, 2461717833658872781238383813854943728, 51, 17, 824, 855, 2, 29981, 3087, 215308, 123456790123456790123456790123456790123452, 132813776, 1086162642, 1836311902, 400276874544]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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