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A100555 Smallest square that is equal to the sum of n not-necessarily-distinct primes plus 1. 4
1, 4, 9, 9, 9, 16, 16, 16, 25, 25, 25, 25, 25, 36, 36, 36, 36, 36, 49, 49, 49, 49, 49, 49, 49, 64, 64, 64, 64, 64, 64, 64, 81, 81, 81, 81, 81, 81, 81, 81, 81, 100, 100, 100, 100, 100, 100, 100, 100, 100, 121, 121, 121, 121, 121, 121, 121, 121, 121, 121, 121, 144, 144 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..62.

EXAMPLE

a(1)=4 because 2^2=1+3.

a(2)=9 because 3^2=1+3+5.

a(3)=9 because 3^2=1+2+3+3.

a(4)=9 because 3^2=1+2+2+2+2.

CROSSREFS

Cf. A100498, A101776-A101778.

Sequence in context: A200642 A209674 A157300 * A250126 A186887 A140978

Adjacent sequences:  A100552 A100553 A100554 * A100556 A100557 A100558

KEYWORD

nonn

AUTHOR

Giovanni Teofilatto, Dec 31 2004

EXTENSIONS

Corrected and extended by Ray Chandler, Jan 10 2005

STATUS

approved

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Last modified May 27 10:31 EDT 2020. Contains 334655 sequences. (Running on oeis4.)