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A160943
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a(n) = n + digital sum(n-1) + digital sum(n+1)
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0
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3, 6, 9, 12, 15, 18, 21, 24, 18, 21, 15, 18, 21, 24, 27, 30, 33, 36, 30, 33, 27, 30, 33, 36, 39, 42, 45, 48, 42, 45, 39, 42, 45, 48, 51, 54, 57, 60, 54, 57, 51, 54, 57, 60, 63, 66, 69, 72, 66, 69, 63, 66, 69, 72, 75, 78, 81, 84, 78, 81, 75, 78, 81, 84, 87, 90, 93, 96, 90, 93
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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COMMENTS
| a(8)= 8+ds(7)+ds(9)=7+8+9=24; a(15)=15+ds(14)+ds(16)=15+5+7=27; a(26)=26+ds(25)+ds(27)=26+7+9=42
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MATHEMATICA
| Table[n+Total[IntegerDigits[n-1]]+Total[IntegerDigits[n+1]], {n, 70}] (* From Harvey P. Dale, June 24 2011 *)
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CROSSREFS
| Sequence in context: A198263 A119888 A003252 * A160930 A161351 A008585
Adjacent sequences: A160940 A160941 A160942 * A160944 A160945 A160946
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KEYWORD
| nonn,base
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AUTHOR
| Claudio L Meller (claudiomeller(AT)gmail.com), May 30 2009
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