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.

A227500 a(0)=a(1)=0; for n>1, a(n) = numerator( r(n) ), where r(n) = r(n-1)+r(n-2)+A027641(n-2)/A027642(n-2) and r(0)=r(1)=a(0).

Table of values

n a(n)
0 0
1 0
2 1
3 1
4 5
5 13
6 19
7 179
8 1028
9 1103
10 893
11 2889
12 15445
13 249787
14 24988
15 8494711
16 6888613
17 7423979
18 101535859
19 329279361
20 1187585188
21 128951009
22 2513033741
23 25007430139
24 599126628077
25 591141383117
26 -3361274604
27 1470023540617
28 22712552603063
29 322385807064733
30 -26340115994784101

List of values

[0, 0, 1, 1, 5, 13, 19, 179, 1028, 1103, 893, 2889, 15445, 249787, 24988, 8494711, 6888613, 7423979, 101535859, 329279361, 1187585188, 128951009, 2513033741, 25007430139, 599126628077, 591141383117, -3361274604, 1470023540617, 22712552603063, 322385807064733, -26340115994784101]