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.

A202907 Expand 1/(1 - (3/2)*x + (2/3)*x^4 - x^5) in powers of x, then multiply coefficient of x^n by 3^floor(n/4)*2^n to get integers.

Table of values

n a(n)
0 1
1 3
2 9
3 27
4 211
5 633
6 1899
7 5697
8 52297
9 156891
10 470673
11 1412019
12 12675403
13 38026209
14 114078627
15 342235881
16 3081171505
17 9243514515
18 27730543545
19 83191630635
20 748691121283
21 2246073363849
22 6738220091547

List of values

[1, 3, 9, 27, 211, 633, 1899, 5697, 52297, 156891, 470673, 1412019, 12675403, 38026209, 114078627, 342235881, 3081171505, 9243514515, 27730543545, 83191630635, 748691121283, 2246073363849, 6738220091547]