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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.

A090248 a(n) = 27a(n-1) - a(n-2), starting with a(0) = 2 and a(1) = 27.

Table of values

n a(n)
0 2
1 27
2 727
3 19602
4 528527
5 14250627
6 384238402
7 10360186227
8 279340789727
9 7531841136402
10 203080369893127
11 5475638145978027
12 147639149571513602
13 3980781400284889227
14 107333458658120495527
15 2894022602368968490002
16 78031276805304028734527

List of values

[2, 27, 727, 19602, 528527, 14250627, 384238402, 10360186227, 279340789727, 7531841136402, 203080369893127, 5475638145978027, 147639149571513602, 3980781400284889227, 107333458658120495527, 2894022602368968490002, 78031276805304028734527]

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

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