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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.

A083336 a(n) = 4*a(n-2) - a(n-4).

Table of values

n a(n)
0 3
1 3
2 9
3 12
4 33
5 45
6 123
7 168
8 459
9 627
10 1713
11 2340
12 6393
13 8733
14 23859
15 32592
16 89043
17 121635
18 332313
19 453948
20 1240209
21 1694157
22 4628523
23 6322680
24 17273883
25 23596563
26 64467009
27 88063572
28 240594153
29 328657725
30 897909603
31 1226567328
32 3351044259
33 4577611587
34 12506267433

List of values

[3, 3, 9, 12, 33, 45, 123, 168, 459, 627, 1713, 2340, 6393, 8733, 23859, 32592, 89043, 121635, 332313, 453948, 1240209, 1694157, 4628523, 6322680, 17273883, 23596563, 64467009, 88063572, 240594153, 328657725, 897909603, 1226567328, 3351044259, 4577611587, 12506267433]

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

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