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Search: id:A135409
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| A135409 |
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Sum of all n-digit Keith numbers. |
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+0
1
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| 0, 244, 939, 38842, 399158, 3185054, 8997888, 89003533, 380705305
(list; graph; listen)
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OFFSET
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2,2
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COMMENT
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There are no 1-digit and 10-digit Keith numbers.
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LINKS
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Jason Earls and Eric Weisstein's World of Mathematics, Keith Number.
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EXAMPLE
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Sum of all 2-digit Keith numbers is 244.
Sum of all 3-digit Keith numbers is 939.
Sum of all 4-digit Keith numbers is 38842.
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CROSSREFS
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Cf. A007629.
Sequence in context: A051002 A044987 A031786 this_sequence A081864 A002594 A085440
Adjacent sequences: A135406 A135407 A135408 this_sequence A135410 A135411 A135412
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KEYWORD
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nonn,base
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AUTHOR
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Parthasarathy Nambi (PachaNambi(AT)yahoo.com), Dec 10 2007
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