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Search: id:A125202
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A125202 4*n^2 - 6*n + 1. +0
6
-1, 5, 19, 41, 71, 109, 155, 209, 271, 341, 419, 505, 599, 701, 811, 929, 1055, 1189, 1331, 1481, 1639, 1805, 1979, 2161, 2351, 2549, 2755, 2969, 3191, 3421, 3659, 3905, 4159, 4421, 4691, 4969, 5255, 5549, 5851, 6161, 6479, 6805, 7139, 7481, 7831, 8189, 8555, 8929, 9311, 9701, 10099, 10505, 10919, 11341 (list; graph; listen)
OFFSET

1,2

COMMENT

a(n) = A125199(n,n-1) for n>1;

A003415(a(n)) = A017089(n-1).

CROSSREFS

Cf. A002939, A016789, A017041, A017485.

Sequence in context: A068963 A129828 A031379 this_sequence A024841 A140761 A100572

Adjacent sequences: A125199 A125200 A125201 this_sequence A125203 A125204 A125205

KEYWORD

sign

AUTHOR

Reinhard Zumkeller (reinhard.zumkeller(AT)lhsystems.com), Nov 24 2006

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Last modified July 25 07:41 EDT 2008. Contains 142293 sequences.


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