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.

A375454 Expansion of g.f. A(x) satisfying A(x)^2 = A( x^2/(1-2*x)^4 ).

Table of values

n a(n)
1 1
2 4
3 14
4 56
5 253
6 1188
7 5598
8 26456
9 126278
10 611640
11 3010948
12 15058064
13 76399263
14 392524428
15 2038142346
16 10674131464
17 56281299098
18 298286598920
19 1586959692508
20 8466559886448
21 45260129274602
22 242296862848648
23 1298487003814300
24 6964374684442416
25 37378818578434617
26 200745991803248388

List of values

[1, 4, 14, 56, 253, 1188, 5598, 26456, 126278, 611640, 3010948, 15058064, 76399263, 392524428, 2038142346, 10674131464, 56281299098, 298286598920, 1586959692508, 8466559886448, 45260129274602, 242296862848648, 1298487003814300, 6964374684442416, 37378818578434617, 200745991803248388]

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

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