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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.

A090004 Expansion of L(x)^(1/2), where L(x) is the g.f. for the Catalan Larcombe-French sequence A053175.

Table of values

n a(n)
0 1
1 4
2 32
3 320
4 3616
5 44160
6 568320
7 7587840
8 104042496
9 1455308800
10 20671234048
11 297204973568
12 4315444576256
13 63173752913920
14 931171553771520
15 13806071300751360
16 205737584679321600
17 3079516590086553600
18 46275305227975393280
19 697790255614687969280
20 10554814464110079508480

List of values

[1, 4, 32, 320, 3616, 44160, 568320, 7587840, 104042496, 1455308800, 20671234048, 297204973568, 4315444576256, 63173752913920, 931171553771520, 13806071300751360, 205737584679321600, 3079516590086553600, 46275305227975393280, 697790255614687969280, 10554814464110079508480]

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

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