cp's OEIS Frontend

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.

A290902 p-INVERT of the positive integers, where p(S) = 1 - 3*S.

Table of values

n a(n)
0 3
1 15
2 72
3 345
4 1653
5 7920
6 37947
7 181815
8 871128
9 4173825
10 19997997
11 95816160
12 459082803
13 2199597855
14 10538906472
15 50494934505
16 241935766053
17 1159183895760
18 5553983712747
19 26610734667975
20 127499689627128
21 610887713467665
22 2926938877711197
23 14023806675088320

List of values

[3, 15, 72, 345, 1653, 7920, 37947, 181815, 871128, 4173825, 19997997, 95816160, 459082803, 2199597855, 10538906472, 50494934505, 241935766053, 1159183895760, 5553983712747, 26610734667975, 127499689627128, 610887713467665, 2926938877711197, 14023806675088320]

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

Content is available under The OEIS End-User License Agreement.