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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.

A081891 a(n) = 10^n - 9^n - 8^n - 7^n + 3*6^n.

Table of values

n a(n)
0 1
1 4
2 14
3 64
4 830
5 14704
6 228734
7 3136144
8 39450110
9 468241264
10 5338397054
11 59140070224
12 641540046590
13 6850671429424
14 72282030453374
15 755587489260304
16 7840735233590270
17 80889167950995184
18 830567232465613694
19 8495462278285810384
20 86620589245358801150
21 880864903819470714544

List of values

[1, 4, 14, 64, 830, 14704, 228734, 3136144, 39450110, 468241264, 5338397054, 59140070224, 641540046590, 6850671429424, 72282030453374, 755587489260304, 7840735233590270, 80889167950995184, 830567232465613694, 8495462278285810384, 86620589245358801150, 880864903819470714544]

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

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