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Search: id:A135943
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| A135943 |
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Numbers with a digit-sum which is a multiple of 3 and with sorted digits forming an arithmetic progression. |
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+0
1
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| 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39, 42, 45, 48, 51, 54, 57, 60, 63, 66, 69, 72, 75, 78, 81, 84, 87, 90, 93, 96, 99, 102, 105, 108, 111, 120, 123, 132, 135, 147, 150, 153, 159, 174, 180, 195, 201, 204, 207, 210, 213, 222, 231, 234, 240, 243, 246, 258, 264, 270, 285
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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While checking for an arithmetic progression, leading zeros are discarded. With 108,
for example, digits sorting gives 018, and this represents 18 where 1 and 8 are in arithmetic progression.
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CROSSREFS
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Cf. A008585.
Sequence in context: A008585 A031193 A008486 this_sequence A036686 A059563 A085126
Adjacent sequences: A135940 A135941 A135942 this_sequence A135944 A135945 A135946
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KEYWORD
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base,easy,nonn,new
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AUTHOR
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Giovanni Teofilatto (g.teofilatto(AT)tiscalinet.it), Mar 02 2008
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EXTENSIONS
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Edited and extended by R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Nov 01 2009
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