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Search: id:A120911
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| A120911 |
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Triangle read by rows where t(n,m) is the (floor(n/m))th integer from among those positive integers not occurring earlier in the sequence. |
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+0
3
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| 1, 3, 2, 6, 4, 5, 10, 8, 7, 9, 15, 12, 11, 13, 14, 21, 18, 17, 16, 19, 20, 28, 24, 23, 22, 25, 26, 27, 36, 32, 30, 31, 29, 33, 34, 35, 45, 40, 39, 38, 37, 41, 42, 43, 44, 55, 50, 48, 47, 49, 46, 51, 52, 53, 54, 66, 60, 58, 57, 59, 56, 61, 62, 63, 64, 65, 78, 72, 70, 69, 68, 71
(list; table; graph; listen)
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OFFSET
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1,2
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FORMULA
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T(n,k) = n(n-1)/2 + U(n,k), where U(n,1) = n, U(n,k) = k-1 if floor(n/k) = floor(n/(k-1)), otherwise U(n,k) = floor(n/k). - Frank Adams-Watters (FrankTAW(AT)Netscape.net), Jul 25 2006
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CROSSREFS
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Cf. A120912, A120913.
Adjacent sequences: A120908 A120909 A120910 this_sequence A120912 A120913 A120914
Sequence in context: A084498 A066182 A059399 this_sequence A064789 A093050 A054089
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KEYWORD
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easy,nonn,tabl
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AUTHOR
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Leroy Quet (qq-quet(AT)mindspring.com), Jul 15 2006
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EXTENSIONS
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More terms from Frank Adams-Watters (FrankTAW(AT)Netscape.net), Jul 25 2006
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