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Search: id:A111302
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| A111302 |
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Define a(1)=1. a(n) is the smallest positive integer with the property that a(n)^2 cannot be created by summing the squares of at most n values chosen among the previous terms (with repeats allowed). |
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1
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OFFSET
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1,2
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EXAMPLE
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a(3) <> 3 because we can write 3^2=a(2)^2+a(2)^2+a(1)^2 by using not more than 3 terms.
But it is impossbile to write 4^2 as the sum of at most three squares of the previous elements, thus a(3)=4.
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CROSSREFS
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Sequence in context: A022428 A096186 A088901 this_sequence A092530 A139557 A103690
Adjacent sequences: A111299 A111300 A111301 this_sequence A111303 A111304 A111305
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KEYWORD
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nonn,more
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AUTHOR
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Stefan Steinerberger (hansibal(AT)hotmail.com), Nov 02 2005
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