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Search: id:A003990
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| A003990 |
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Table of LCM(x,y), where (x,y) = (1,1),(1,2),(2,1),(1,3),(2,2),(3,1),... |
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12
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| 1, 2, 2, 3, 2, 3, 4, 6, 6, 4, 5, 4, 3, 4, 5, 6, 10, 12, 12, 10, 6, 7, 6, 15, 4, 15, 6, 7, 8, 14, 6, 20, 20, 6, 14, 8, 9, 8, 21, 12, 5, 12, 21, 8, 9, 10, 18, 24, 28, 30, 30, 28, 24, 18, 10, 11, 10, 9, 8, 35, 6, 35, 8, 9, 10, 11, 12, 22, 30, 36, 40, 42, 42, 40, 36, 30, 22, 12, 13, 12, 33, 20, 45, 24
(list; table; graph; listen)
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OFFSET
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1,2
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LINKS
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T. D. Noe, First 100 antidiagonals of array, flattened
Index entries for sequences related to lcm's
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EXAMPLE
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1; 2,2; 3,2,3; 4,6,6,4; 5,4,3,4,5; 6,10,12,12,10,6; ...
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CROSSREFS
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Cf. A003989, A003991, A051173.
A(x, y) = A075174(A003986(A075173(x), A075173(y))) = A075176(A003986(A075175(x), A075175(y))).
Antidiagonal sums are in A006580.
Adjacent sequences: A003987 A003988 A003989 this_sequence A003991 A003992 A003993
Sequence in context: A048621 A045772 A091256 this_sequence A059896 A079542 A022467
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KEYWORD
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tabl,nonn,easy,nice
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AUTHOR
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Marc LeBrun (mlb(AT)well.com)
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