

A299956


Prime numbers not in A299930.


8



2, 3, 5, 7, 11, 13, 17, 23, 29, 31, 41, 43, 47, 53, 59, 61, 67, 71, 73, 83, 89, 101, 103, 107, 113, 131, 137, 149, 151, 157, 167, 173, 179, 181, 191, 193, 197, 199, 211, 227, 233, 239, 241, 251, 257, 263, 269, 271, 281, 293, 307, 311, 317, 331, 337, 347, 353, 359
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OFFSET

1,1


COMMENTS

These prime numbers cannot be represented by a cyclotomic binary form f as p = f(x,y) with x and y odd prime numbers and x > y. Apart from 2 they appear as the leafs of cbftrees introduced in A299930.


LINKS

Table of n, a(n) for n=1..58.


PROG

(Julia)
isA299956(n) = isprime(ZZ(n)) && !isA299930(n)
A299956list(upto) = [n for n in 1:upto if isA299956(n)]
println(A299956list(1000))


CROSSREFS

Cf. A293654, A296095, A299214, A299498, A299733, A299928, A299929, A299930, A299964.
Sequence in context: A165671 A162855 A194954 * A192503 A040067 A181659
Adjacent sequences: A299953 A299954 A299955 * A299957 A299958 A299959


KEYWORD

nonn


AUTHOR

Peter Luschny, Feb 25 2018


STATUS

approved



