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Search: id:A077022
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| A077022 |
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Values of n such that sum of first n primes squared is divisible by n-th prime. |
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+0
2
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OFFSET
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1,2
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COMMENT
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Remainder, a(n), when sum of first n primes squared is divided by n-th prime in A072004. In A072004, in three cases, a(n)=0 that is the sum of squares of first n primes is divisible by n-th prime. Here we added two more cases when a(n)=0.
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EXAMPLE
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6 is OK because (p(1)^2+...+p(6)^2)/p(6)=29; 17 is OK because (p(1)^2+...+p(17)^2)/p(17)=284; 11156 is OK because (p(1)^2+...+p(11156)^2)/p(11156)=410066261; 16548 is OK because (p(1)^2+...+p(16548 )^2)/p(16548)=941945317.
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CROSSREFS
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Cf. A072004, A077023.
Adjacent sequences: A077019 A077020 A077021 this_sequence A077023 A077024 A077025
Sequence in context: A130278 A024080 A099436 this_sequence A074923 A093061 A078741
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KEYWORD
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easy,nonn
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AUTHOR
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Randy L. Ekl and Zak Seidov (Randy.Ekl(AT)Motorola.com; zakseidov(AT)yahoo.com), Oct 17 2002
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