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Search: id:A139033
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| A139033 |
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a(1)=1; at n>=2, a(n) = least square > a(n-1) such that sum a(1)+...+a(n) is a prime number. |
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+0
3
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| 1, 4, 36, 576, 1296, 1764, 2304, 4356, 6084, 15876, 19044, 20736, 26244, 44100, 69696, 76176, 82944, 86436, 112896, 152100, 176400, 213444, 248004, 254016, 260100, 285156, 291600, 324900, 381924, 396900, 412164, 435600, 476100, 492804
(list; graph; listen)
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OFFSET
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1,2
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COMMENT
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Corresponding primes: 5,41,581,1301,1769,2309,4361,6089,15881,19049,20741,26249,44105 (A139034).
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LINKS
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Zak Seidov, Table of n, a(n) for n = 1..2000.
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MATHEMATICA
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s={1}; su=1; Do[p=su+n^2; If[PrimeQ[p], su=p; AppendTo[s, n^2]], {n, 2, 120000}]; s
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CROSSREFS
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Cf. A139034.
Sequence in context: A070780 A132687 A073852 this_sequence A001044 A086879 A002761
Adjacent sequences: A139030 A139031 A139032 this_sequence A139034 A139035 A139036
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KEYWORD
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nonn
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AUTHOR
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Zak Seidov (zakseidov(AT)yahoo.com), Apr 07 2008
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