A187559 - OEIS

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A187559

Primes arising in A187234.

2, 3, 5, 7, 2, 3, 5, 7, 2, 3, 5, 7, 3, 5, 7, 11, 13, 17, 19, 2, 5, 11, 17, 23, 29, 3, 7, 11, 19, 23, 31, 19, 29, 5, 11, 17, 23, 29, 41, 47, 53, 59, 13, 41, 7, 23, 31, 47, 71, 79, 17, 53, 71, 89, 19, 29, 59, 79, 89, 2, 2, 5, 11, 17, 23, 29, 11, 31, 41, 17, 31, 59, 73, 23, 41, 59, 29, 73, 3, 3, 7, 11, 19, 23, 31, 11, 31, 41, 19, 47, 61, 23 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1,1`
	LINKS	`Table of n, a(n) for n=1..92.`
	EXAMPLE	`a(22) = 11 because A187234(22) = 123, and 12 + 13 + 2*3 = 11 is prime.`
	MAPLE	`with(numtheory):T:=array(1..10):k:=1:for n from 1 to 1000 do:l:=length(n):n0:=n:for` `m from 1 to l do:q:=n0:u:=irem(q, 10):v:=iquo(q, 10):n0:=v :T[m]:=u:od: s:=0:` `for i from 1 to l-1 do: for j from i+1 to l do: s:=s+T[i]*T[j]:od: od:if type(s, prime)` = true then printf(`%d, `, s):else fi:od:
	CROSSREFS	`Cf. A187234.` `Sequence in context: A032759 A142711 A093338 * A104212 A139751 A076779` `Adjacent sequences: A187556 A187557 A187558 * A187560 A187561 A187562`
	KEYWORD	`nonn,base,easy`
	AUTHOR	`Michel Lagneau, Mar 11 2011`
	STATUS	`approved`

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Last modified May 19 22:06 EDT 2013. Contains 225436 sequences.