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.

A181768 G.f.: (1/2)*(3 - sqrt((1-5*x)/(1-x))).

Table of values

n a(n)
0 1
1 1
2 2
3 5
4 15
5 51
6 188
7 731
8 2950
9 12235
10 51822
11 223191
12 974427
13 4302645
14 19181100
15 86211885
16 390248055
17 1777495635
18 8140539950
19 37463689775
20 173164232965
21 803539474345
22 3741930523740
23 17481709707825
24 81912506777200
25 384847173838501
26 1812610804416698
27 8556895079642921
28 40480850291739165
29 191884148712996795
30 911225151259732188
31 4334673398737025619
32 20653004146207902678
33 98551406393189773875

List of values

[1, 1, 2, 5, 15, 51, 188, 731, 2950, 12235, 51822, 223191, 974427, 4302645, 19181100, 86211885, 390248055, 1777495635, 8140539950, 37463689775, 173164232965, 803539474345, 3741930523740, 17481709707825, 81912506777200, 384847173838501, 1812610804416698, 8556895079642921, 40480850291739165, 191884148712996795, 911225151259732188, 4334673398737025619, 20653004146207902678, 98551406393189773875]

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

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