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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.

A159338 Transform of the finite sequence (1, 0, -1, 0, 1, 0, -1) by the T_{1,0} transformation (see link).

Table of values

n a(n)
0 1
1 2
2 4
3 11
4 27
5 61
6 140
7 327
8 761
9 1769
10 4112
11 9559
12 22222
13 51660
14 120095
15 279187
16 649031
17 1508814
18 3507567
19 8154104
20 18955992
21 44067335
22 102444125
23 238153697
24 553640176
25 1287057259
26 2992045122
27 6955661024
28 16169950087
29 37590573335

List of values

[1, 2, 4, 11, 27, 61, 140, 327, 761, 1769, 4112, 9559, 22222, 51660, 120095, 279187, 649031, 1508814, 3507567, 8154104, 18955992, 44067335, 102444125, 238153697, 553640176, 1287057259, 2992045122, 6955661024, 16169950087, 37590573335]

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

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