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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.

A014920 a(1)=1, a(n) = n*7^(n-1) + a(n-1).

Table of values

n a(n)
1 1
2 15
3 162
4 1534
5 13539
6 114381
7 937924
8 7526268
9 59409477
10 462945547
11 3570173286
12 27298094202
13 207234827815
14 1563680973513
15 11737027066248
16 87698011225336
17 652657830908553
18 4840007082678279
19 35779865442976810
20 263757769150439670
21 1939395361400291691
22 14227404371232539845

List of values

[1, 15, 162, 1534, 13539, 114381, 937924, 7526268, 59409477, 462945547, 3570173286, 27298094202, 207234827815, 1563680973513, 11737027066248, 87698011225336, 652657830908553, 4840007082678279, 35779865442976810, 263757769150439670, 1939395361400291691, 14227404371232539845]

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

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