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Search: id:A077192
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| A077192 |
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{Concatenation of n-1 and n+1}/n where n is a member of A069871. |
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+0
2
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| 8, 90, 92, 98, 992, 998, 9992, 9998, 99992, 99998, 999992, 999998, 9999992, 9999998, 99999992, 99999998, 999999992, 999999998, 9999999992, 9999999998, 99999999992, 99999999998, 999999999992, 999999999998, 9999999999992
(list; graph; listen)
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OFFSET
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0,1
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FORMULA
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a(1)=8, a(2)=90, a(2n-1)=10^n-8, a(2n)=10^n-2 - Sascha Kurz (sascha.kurz(AT)uni-bayreuth.de), Feb 10 2003
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EXAMPLE
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8 and 90 are members as 24/3 = 8, 810/9 =90.
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CROSSREFS
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Cf. A069871.
Sequence in context: A131655 A105718 A045732 this_sequence A128304 A056784 A092956
Adjacent sequences: A077189 A077190 A077191 this_sequence A077193 A077194 A077195
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KEYWORD
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base,nonn
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AUTHOR
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Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Nov 01 2002
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EXTENSIONS
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More terms from Sascha Kurz (sascha.kurz(AT)uni-bayreuth.de), Feb 10 2003
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