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Search: id:A062862
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A062862 Number of ways n can be written as the sum of squares of consecutive numbers (possibly including squares of negative numbers). +0
3
1, 4, 1, 0, 2, 4, 2, 0, 0, 2, 1, 0, 0, 2, 4, 2, 2, 0, 0, 2, 0, 0, 0, 0, 0, 4, 0, 0, 1, 2, 4, 2, 0, 0, 0, 2, 2, 0, 0, 0, 0, 2, 0, 0, 2, 0, 0, 0, 0, 2, 2, 0, 0, 0, 2, 4, 2, 0, 0, 0, 3, 2, 0, 0, 2, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 2, 0, 0, 0, 4, 2, 0, 0, 0, 2, 4, 2, 0, 0, 0, 2, 0, 0, 0, 2, 0, 0, 0, 0 (list; graph; listen)
OFFSET

0,2

LINKS

Index entries for sequences related to sums of squares

EXAMPLE

a(25)=4 since 25 = 5^2 = 3^2+4^2 = (-4)^2+(-3)^2 = (-5)^2.

CROSSREFS

If a(n) is zero then n is in A062863, otherwise in A062861. If a(n) is odd then n is in A006331.

Sequence in context: A058710 A124539 A096501 this_sequence A084119 A122899 A021713

Adjacent sequences: A062859 A062860 A062861 this_sequence A062863 A062864 A062865

KEYWORD

nonn

AUTHOR

Henry Bottomley (se16(AT)btinternet.com), Jun 25 2001

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


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