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.

A378247 G.f. A(x) satisfies A(x)^2 = A( x^2 + 2*x*A(x)^2 + 2*A(x)^4 ).

Table of values

n a(n)
1 1
2 1
3 3
4 10
5 39
6 161
7 699
8 3135
9 14427
10 67716
11 322959
12 1560585
13 7624007
14 37593476
15 186856061
16 935214523
17 4709265692
18 23841104525
19 121275951719
20 619558165489
21 3177346503440
22 16351749778167
23 84419824808865
24 437105510426235
25 2269266695980449
26 11810014285000263
27 61602685079710638

List of values

[1, 1, 3, 10, 39, 161, 699, 3135, 14427, 67716, 322959, 1560585, 7624007, 37593476, 186856061, 935214523, 4709265692, 23841104525, 121275951719, 619558165489, 3177346503440, 16351749778167, 84419824808865, 437105510426235, 2269266695980449, 11810014285000263, 61602685079710638]