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Search: id:A154389
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| A154389 |
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Nonprimes with largest digit = odd nonprime. |
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+0
1
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| 1, 9, 10, 39, 49, 90, 91, 92, 93, 94, 95, 96, 98, 99, 100, 119, 129, 159, 169, 190, 192, 194, 195, 196, 198, 209, 219, 249, 259, 279, 289, 290, 291, 292, 294, 295, 296, 297, 298, 299, 309, 319, 329, 339, 369, 390, 391, 392, 393, 394, 395, 396, 398, 399, 429
(list; graph; listen)
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OFFSET
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1,2
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EXAMPLE
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If 1=nonprime and 1(largest digit)=odd nonprime, then 1=a(1). If 9=nonprime and 9(largest digit)=odd nonprime, then 9=a(2). If 10=nonprime, 1>0 and 1(largest digit)=odd nonprime, then 10=a(3). If 39=nonprime, 3<9 and 9(largest digit)=odd nonprime, then 39=a(4), etc.
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CROSSREFS
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Cf. Nonprimes in A141468.
Sequence in context: A007252 A119209 A038206 this_sequence A041172 A045913 A156857
Adjacent sequences: A154386 A154387 A154388 this_sequence A154390 A154391 A154392
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KEYWORD
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nonn,base
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AUTHOR
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Juri-Stepan Gerasimov (2stepan(AT)ranmbler.ru.), Jan 08 2009
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