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A158342 List of twin primes p1 and p2 with odd sum of digits of p1 and even sum of digits of p2. +0
1
29, 31, 179, 181, 809, 811, 1019, 1021, 1229, 1231, 1619, 1621, 1949, 1951, 2339, 2341, 2999, 3001, 3119, 3121, 3329, 3331, 3389, 3391, 4229, 4231, 4649, 4651, 5009, 5011, 5279, 5281, 5639, 5641, 5879, 5881, 6089, 6091, 6269, 6271, 6359, 6361, 6449 (list; graph; listen)
OFFSET

1,1

EXAMPLE

If p1=29(2+9=11=odd) and p2=31(3+1=4=even), then 29=a(1) and 31=a(2). If p1=179(1+7+9=17=odd) amd p2=181(1+8+1=10=even), then 179=a(3) and 181=a(4).

CROSSREFS

Cf. A077800.

Sequence in context: A156976 A157681 A077286 this_sequence A114180 A159022 A102527

Adjacent sequences: A158339 A158340 A158341 this_sequence A158343 A158344 A158345

KEYWORD

nonn

AUTHOR

Juri-Stepan Gerasimov (2stepan(AT)rambler.ru), Mar 16 2009

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.


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