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A110979 Squares equal to the sum of the first n primes minus 1. 2
1, 4, 9, 16, 196, 839056 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

No more terms < 7472966967498, sum of first 10^6 primes minus 1. - Chandler

LINKS

Table of n, a(n) for n=1..6.

MATHEMATICA

Select[Accumulate[Prime[Range[1000]]]-1, IntegerQ[Sqrt[#]]&] (* Harvey P. Dale, Jun 09 2022 *)

CROSSREFS

Cf. A007504, A110997.

Sequence in context: A089149 A082920 A204434 * A073173 A313352 A253601

Adjacent sequences:  A110976 A110977 A110978 * A110980 A110981 A110982

KEYWORD

nonn

AUTHOR

Giovanni Teofilatto, Sep 30 2005

EXTENSIONS

a(6) corrected by Ray Chandler, Oct 07 2005

STATUS

approved

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Last modified August 18 19:27 EDT 2022. Contains 356215 sequences. (Running on oeis4.)