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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.

A124239 a(n) = Sum_{k=1..n} Sum_{m=1..n} (2*k - 1)^m.

Table of values

n a(n)
1 1
2 14
3 197
4 3704
5 90309
6 2704470
7 95856025
8 3921108576
9 181756280697
10 9413656622446
11 538727822713277
12 33757715581666296
13 2298714540642445405
14 169016703698449309846
15 13345320616706684277361
16 1126219424250538393789824
17 101160070702700567996590513
18 9636001314414804672487492878

List of values

[1, 14, 197, 3704, 90309, 2704470, 95856025, 3921108576, 181756280697, 9413656622446, 538727822713277, 33757715581666296, 2298714540642445405, 169016703698449309846, 13345320616706684277361, 1126219424250538393789824, 101160070702700567996590513, 9636001314414804672487492878]

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

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