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A122654 Smallest prime p such that p^2 equal to the sum of 2n+1 consecutive odd primes, or 1 if such a prime does not exist. 1
7, 31, 13, 29, 107, 293, 821, 379, 293, 83, 31, 241, 37, 653, 43, 211, 73, 1123, 311, 1567, 1607, 929, 233, 4801, 601, 5087, 307, 163, 709, 1021, 983, 191, 1327, 241, 5443, 157, 277, 151, 743, 4651, 32371, 1493, 1373, 8521, 683, 7919, 947, 1279, 10847, 1613 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..50.

EXAMPLE

a(1) = 7 because A122560[1] = 7 and 7^2 = 49 = 13 + 17 + 19 = p(6) + p(7) + p(8).

CROSSREFS

Cf. A122560, A070934.

Sequence in context: A156347 A221402 A065916 * A184121 A167768 A103630

Adjacent sequences:  A122651 A122652 A122653 * A122655 A122656 A122657

KEYWORD

nonn

AUTHOR

Alexander Adamchuk, Sep 21 2006

EXTENSIONS

More terms from Don Reble (djr(AT)nk.ca), Sep 22 2006

STATUS

approved

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Last modified December 5 21:40 EST 2016. Contains 278771 sequences.