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Search: id:A105045
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A105045 a(0)=0, a(1)=1, a(2)=2, a(3)=3, a(4)=12, for n>4 a(n) = 8*a(n-2) - a(n-4) - 3. +0
2
0, 1, 2, 3, 12, 20, 91, 154, 713, 1209, 5610, 9515, 44164, 74908, 347699, 589746, 2737425, 4643057, 21551698, 36554707, 169676156, 287794596, 1335857547, 2265802058, 10517184217, 17838621865, 82801616186, 140443172859 (list; graph; listen)
OFFSET

0,3

COMMENT

It appears that this sequences gives all nonnegative m such that 60*m^2 - 60*m + 1 is a square and that for n>3, a(n+1) = A103200(n) + 1.

CROSSREFS

Cf. A103200.

Sequence in context: A083265 A067391 A096361 this_sequence A076000 A096632 A124261

Adjacent sequences: A105042 A105043 A105044 this_sequence A105046 A105047 A105048

KEYWORD

nonn

AUTHOR

Gerald McGarvey (Gerald.McGarvey(AT)comcast.net), Apr 03 2005

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.


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