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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.

A344066 Expansion of Product_{k>=1} (1 + 7^(k-1)*x^k).

Table of values

n a(n)
0 1
1 1
2 7
3 56
4 392
5 3087
6 21952
7 170471
8 1210104
9 9411920
10 66824632
11 513890832
12 3683707839
13 28086110472
14 201122377288
15 1534688027817
16 10978118077136
17 83158453503608
18 599161640356888
19 4508826988300152
20 32435340235930576
21 244366486039786096
22 1756858874561956865
23 13161303959340223232

List of values

[1, 1, 7, 56, 392, 3087, 21952, 170471, 1210104, 9411920, 66824632, 513890832, 3683707839, 28086110472, 201122377288, 1534688027817, 10978118077136, 83158453503608, 599161640356888, 4508826988300152, 32435340235930576, 244366486039786096, 1756858874561956865, 13161303959340223232]

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

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