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A117412
Sum of the interior angles of an n-sided polygon, in gradians.
1
200, 400, 600, 800, 1000, 1200, 1400, 1600, 1800, 2000, 2200, 2400, 2600, 2800, 3000, 3200, 3400, 3600, 3800, 4000, 4200, 4400, 4600, 4800, 5000, 5200, 5400, 5600, 5800, 6000, 6200, 6400, 6600, 6800, 7000, 7200, 7400, 7600, 7800, 8000, 8200, 8400, 8600
OFFSET
3,1
LINKS
Tanya Khovanova, Recursive Sequences
Eric Weisstein's World of Mathematics, Gradian.
FORMULA
a(n) = 200*(n-2) for n >= 3.
From G. C. Greubel, Sep 07 2022: (Start)
a(n) = 40*A008587(n-2).
G.f.: 200*x^3/(1-x)^2.
E.g.f.: 200*(2 + x - (2 - x)*exp(x)). (End)
MATHEMATICA
200*(Range[3, 50] -2) (* G. C. Greubel, Sep 07 2022 *)
PROG
(Magma) [200*(n-2): n in [3..50]]; // G. C. Greubel, Sep 07 2022
(SageMath) [200*(n-2) for n in (3..50)] # G. C. Greubel, Sep 07 2022
CROSSREFS
Cf. A008587.
Sequence in context: A166256 A252059 A004966 * A109632 A258921 A258918
KEYWORD
easy,nonn
AUTHOR
Luc Stevens (lms022(AT)yahoo.com), Apr 25 2006
STATUS
approved