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A209544 Primes not expressed in form n<+>2, where operation <+> defined in A206853. 5
3, 17, 41, 73, 89, 97, 113, 137, 193, 233, 241, 257, 281, 313, 337, 353, 401, 409, 433, 449, 457, 521, 569, 577, 593, 601, 617, 641, 673, 761, 769, 809, 857, 881, 929, 937, 953, 977, 1009, 1033, 1049, 1097, 1129, 1153, 1193, 1201, 1217, 1249, 1289, 1297, 1321 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Trivially every odd prime is expressed in form n<+>1 (cf. A208982).

Are these related to A141174, A045390 or A007519? - R. J. Mathar, Mar 13 2012

LINKS

Table of n, a(n) for n=1..51.

FORMULA

For n>=2, a(n) = A007519(n-1). - Vladimir Shevelev, Apr 18 2012

CROSSREFS

Cf. A205509, A205510, A205511, A205302, A205649, A205533, A122565, A206852, A206853, A206960, A007519, A209554, A182187.

Sequence in context: A196781 A107147 A049078 * A146821 A181981 A135471

Adjacent sequences:  A209541 A209542 A209543 * A209545 A209546 A209547

KEYWORD

nonn,base

AUTHOR

Vladimir Shevelev and Peter J. C. Moses, Mar 10 2012

STATUS

approved

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Last modified March 29 03:29 EDT 2017. Contains 284250 sequences.