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A129446
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Primes p such that p^2 is a centered triangular number; or primes in A129445.
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2
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OFFSET
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1,1
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COMMENTS
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The next terms are too large to include, see the b-file.
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LINKS
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MATHEMATICA
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Do[ f = 3n(n-1)/2 + 1; If[ PrimeQ[ Sqrt[f] ], Print[ Sqrt[f] ] ], {n, 1, 150000} ]
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CROSSREFS
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Cf. A005448 (centered triangular numbers).
Cf. A129444 (numbers k such that centered triangular number A005448(k) = 3*k*(k-1)/2 + 1 is a perfect square).
Cf. A129445 (numbers k > 0 such that k^2 is a centered triangular number).
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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