

A094898


Product of two prime sets.


0



7, 0, 0, 17, 0, 0, 0, 0, 0, 41, 0, 0, 0, 0, 0, 0, 71, 0, 0, 83, 0, 0, 0, 0, 101, 0, 0, 113, 0, 0, 0, 131, 0, 0, 0, 0, 0, 0, 0, 0, 167, 0, 0, 0, 0, 0, 0, 0, 197, 0, 0, 0, 0, 0, 0, 227, 0, 233, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 281, 0, 0, 0, 0, 0, 0, 311, 0, 317, 0, 0, 0, 0, 0, 0, 0, 0, 353, 0, 0, 0, 0
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OFFSET

1,1


COMMENTS

A kind of prime information topology of primes as a product of boths sets being true. This result is a very strange set.


LINKS

Table of n, a(n) for n=1..92.


FORMULA

a(n) = when the linear combination of information of two prime types of 4*m+1 and 4*m+3 are both prime.


MATHEMATICA

a=Table[If[PrimeQ[4*n+1]==True&&PrimeQ[4*n+3]==False, 1, 0], {n, 0, 200}] b=Table[If[PrimeQ[4*n+1]==False&&PrimeQ[4*n+3]==True, 1, 0], {n, 0, 200}] d=Table[If[PrimeQ[a[[n]]*(4*n+1)+b[[n]]*(4*n+3)]==True, a[[n]]*(4*n+1)+b[[n]]*(4*n+3), 0], {n, 1, 200}]


CROSSREFS

Cf. A094896, A094897.
Sequence in context: A240984 A235363 A211904 * A136115 A061846 A293530
Adjacent sequences: A094895 A094896 A094897 * A094899 A094900 A094901


KEYWORD

nonn,uned,obsc


AUTHOR

Roger L. Bagula, Jun 14 2004


STATUS

approved



