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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.

A277034 G.f. A(x) satisfies: A(x - A(x)^2) = x + A(-x)^2.

Table of values

n a(n)
1 1
2 2
3 4
4 50
5 268
6 3780
7 28872
8 438410
9 4087180
10 65365260
11 697738072
12 11624944660
13 137432369816
14 2371412517480
15 30441246407440
16 542177876315970
17 7460629909188796
18 136882304192481020
19 2001263659780301080
20 37777108180867675020
21 583057080531893501960
22 11314432259935102732856
23 183452721005994056356272

List of values

[1, 2, 4, 50, 268, 3780, 28872, 438410, 4087180, 65365260, 697738072, 11624944660, 137432369816, 2371412517480, 30441246407440, 542177876315970, 7460629909188796, 136882304192481020, 2001263659780301080, 37777108180867675020, 583057080531893501960, 11314432259935102732856, 183452721005994056356272]

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

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