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.

A239201 Expansion of -(x * sqrt(5*x^2 -6*x +1) -2*x^3 +3*x^2 -x) / ((3*x^2 -4*x +1) * sqrt(5*x^2 -6*x +1) +5*x^3 -11*x^2 +7*x -1).

Table of values

n a(n)
1 2
2 5
3 17
4 68
5 293
6 1310
7 5984
8 27725
9 129773
10 612158
11 2905322
12 13857035
13 66361892
14 318901523
15 1536964313
16 7426185908
17 35960185373
18 174468439958
19 847920579938
20 4127211830363
21 20116566452918
22 98172213841553
23 479635277636543
24 2345731259059238
25 11482918774964588
26 56260052353307435
27 275862429353287079
28 1353641461527506630

List of values

[2, 5, 17, 68, 293, 1310, 5984, 27725, 129773, 612158, 2905322, 13857035, 66361892, 318901523, 1536964313, 7426185908, 35960185373, 174468439958, 847920579938, 4127211830363, 20116566452918, 98172213841553, 479635277636543, 2345731259059238, 11482918774964588, 56260052353307435, 275862429353287079, 1353641461527506630]

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

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