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A061890
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Squares which are the sum of initial primes.
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3
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OFFSET
| 1,1
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LINKS
| G. L. Honaker Jr. and C. Caldwell, Prime Curios!: 9
C. Riveras, PrimePuzzles.Net, Problem 9: Sum of first k primes is perfect square
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FORMULA
| a(n) = A061888(n)^2
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EXAMPLE
| 100 = 10^2 = 2+3+5+7+11+13+17+19+23, so 100 is in the sequence.
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CROSSREFS
| Cf. A033997, A033998, A061888.
Sequence in context: A139110 A013855 A204576 * A126686 A168588 A181721
Adjacent sequences: A061887 A061888 A061889 * A061891 A061892 A061893
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KEYWORD
| nonn
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AUTHOR
| David W. Wilson (davidwwilson(AT)comcast.net), May 12 2001
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EXTENSIONS
| Corrected by Vladeta Jovovic, May 21, 2001
219704732167875184222756 from Giovanni Resta (g.resta(AT)iit.cnr.it), May 27 2003
Edited by Ray Chandler (rayjchandler(AT)sbcglobal.net), Mar 20 2007
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