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Search: id:A084194
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| A084194 |
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Even numbers n such that the sum of the digits is prime and the sum of the digits of n/2 is also prime. |
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+0
1
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| 14, 32, 50, 58, 76, 94, 98, 104, 122, 140, 148, 166, 184, 188, 212, 230, 238, 256, 274, 278
(list; graph; listen)
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OFFSET
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0,1
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COMMENT
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Sometimes n/2 is prime.
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EXAMPLE
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3+2=5 for n=32 and 1+6=7 for n/2=16;
5+8=13 for n=58 and 2+9=11 for n/2=29;
2+1+2=5 for n=212 and 1+0+6=7 for n/2=106;
2+5+6=13 for n=256 and 1+2+8=11 for n/2=128.
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CROSSREFS
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Adjacent sequences: A084191 A084192 A084193 this_sequence A084195 A084196 A084197
Sequence in context: A054103 A101183 A101444 this_sequence A031109 A120711 A018959
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KEYWORD
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base,nonn
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AUTHOR
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CAPELLE Patrick (patrick.capelle(AT)clearwire.be), Jun 20 2003
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