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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.

A280796 E.g.f. sqrt(1 - F(x)^2), where F(F(x)) = sin(x).

Table of values

n a(n)
0 1
1 -1
2 -1
3 -13
4 -367
5 -18549
6 -1465953
7 -166262441
8 -25526158559
9 -5088504559209
10 -1277203721141441
11 -394351281523218693
12 -147069662568684159055
13 -65255038602423680990301
14 -33992871584988519888865825
15 -20539580068386370855911967393
16 -14240009948449682448965044873663
17 -11224227759618581623496389602591953
18 -9984932631658989030110444663072663937
19 -9963529315662216629464111409263738683133

List of values

[1, -1, -1, -13, -367, -18549, -1465953, -166262441, -25526158559, -5088504559209, -1277203721141441, -394351281523218693, -147069662568684159055, -65255038602423680990301, -33992871584988519888865825, -20539580068386370855911967393, -14240009948449682448965044873663, -11224227759618581623496389602591953, -9984932631658989030110444663072663937, -9963529315662216629464111409263738683133]

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

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