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Search: id:A093846
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| A093846 |
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Triangle read by rows: for 1 <= k <= n, a(n, k) = 10^(n-1)-1+k*floor(9*10^(n-1)/n). |
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6
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| 9, 54, 99, 399, 699, 999, 3249, 5499, 7749, 9999, 27999, 45999, 63999, 81999, 99999, 249999, 399999, 549999, 699999, 849999, 999999, 2285713, 3571427, 4857141, 6142855, 7428569, 8714283, 9999997, 21249999, 32499999, 43749999, 54999999
(list; table; graph; listen)
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OFFSET
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1,1
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COMMENT
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10^(n-1)-1 and the n-th row are n+1 numbers in arithmetic progression, and the common difference is the largest such that a(n, n) has n digits. This common difference equals A061772(n).
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MAPLE
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A093846 := proc(n, k) RETURN (10^(n-1)-1+k*floor(9*(10^(n-1)/n))); end; for n from 1 to 10 do for k from 1 to n do printf("%d, ", A093846(n, k)); od; od; - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jun 23 2006
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CROSSREFS
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Cf. A061772, A093847, A093849, A093850.
Sequence in context: A003698 A001688 A052108 this_sequence A034719 A013567 A073974
Adjacent sequences: A093843 A093844 A093845 this_sequence A093847 A093848 A093849
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KEYWORD
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base,easy,less,nonn,tabl
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AUTHOR
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Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Apr 18 2004
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EXTENSIONS
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Corrected and extended by R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jun 23 2006
Edited by David Wasserman (dwasserm(AT)earthlink.net), Mar 26 2007
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