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A121518 Numbers that are not the sum of the squares of distinct primes. 7
1, 2, 3, 5, 6, 7, 8, 10, 11, 12, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 26, 27, 28, 30, 31, 32, 33, 35, 36, 37, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 50, 51, 52, 54, 55, 56, 57, 59, 60, 61, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 75, 76, 77, 79, 80, 81, 82, 84, 85, 86 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

There are 2438 terms, the largest of which is 17163.

REFERENCES

See A048261.

LINKS

T. D. Noe, Table of n, a(n) for n = 1..2438

FORMULA

Complement of A048261.

MATHEMATICA

s={0}; Do[p=Prime[n]; s=Union[s, s+p^2], {n, PrimePi[140]}]; s=Select[s, 0<#<Prime[PrimePi[140]]^2&]; Complement[Range[s[[ -1]]], s]

CROSSREFS

Sequence in context: A191894 A284955 A093480 * A287770 A039080 A093435

Adjacent sequences:  A121515 A121516 A121517 * A121519 A121520 A121521

KEYWORD

fini,nonn

AUTHOR

T. D. Noe, Aug 04 2006

STATUS

approved

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Last modified October 24 16:24 EDT 2021. Contains 348233 sequences. (Running on oeis4.)