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A032608
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Concatenation of n and n + 3.
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2
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14, 25, 36, 47, 58, 69, 710, 811, 912, 1013, 1114, 1215, 1316, 1417, 1518, 1619, 1720, 1821, 1922, 2023, 2124, 2225, 2326, 2427, 2528, 2629, 2730, 2831, 2932, 3033, 3134, 3235, 3336, 3437, 3538, 3639, 3740, 3841, 3942, 4043, 4144, 4245
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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FORMULA
| a(n)=n*10^floor(log10(n+3)+1)+n+3, with n>=1 [From Paolo P. Lava (paoloplava(AT)gmail.com), Oct 09 2008]
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MATHEMATICA
| Table[FromDigits[Join[IntegerDigits[n], IntegerDigits[n+3]]], {n, 50}] (* From Harvey P. Dale, Jul 11 2011 *)
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CROSSREFS
| Cf. A001704, A020338.
Sequence in context: A061923 A031075 A020227 * A164393 A164391 A164392
Adjacent sequences: A032605 A032606 A032607 * A032609 A032610 A032611
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KEYWORD
| nonn,base
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AUTHOR
| Patrick De Geest (pdg(AT)worldofnumbers.com), May 15, 1998.
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