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A083506 n-th row of the following triangle contains all distinct numbers that can be obtained as the product of two distinct numbers chosen from 1 to n. (n>1). Sequence contains the triangle read by rows. 0

%I #8 Aug 23 2014 15:17:10

%S 2,2,3,6,2,3,4,6,8,12,2,3,4,5,6,8,10,12,15,20,2,3,4,5,6,8,10,12,15,18,

%T 20,24,30,2,3,4,5,6,7,8,10,12,14,15,18,20,21,24,28,30,35,42,2,3,4,5,6,

%U 7,8,10,12,14,15,16,18,20,21,24,28,30,32,35,40,42,48,56,2,3,4,5,6,7,8,9

%N n-th row of the following triangle contains all distinct numbers that can be obtained as the product of two distinct numbers chosen from 1 to n. (n>1). Sequence contains the triangle read by rows.

%D Amarnath Murthy, Generalization of partition function introducing Smarandache Factor Partitions, Smarandache Notions Journal, 1-2-3, Vol. 11, 2000.

%e 2

%e 2,3,6

%e 2,3,4,6,8,12

%e 2,3,4,5,6,8,10,12,15,20

%e 2,3,4,5,6,8,10,12,15,16,18,20,24,30

%e 2,3,4,5,6,7,8,10,12,...

%e ...

%Y A027428 gives the row lengths.

%K nonn,tabf

%O 2,1

%A _Amarnath Murthy_ and Meenakshi Srikanth (menakan_s(AT)yahoo.com), May 05 2003

%E More terms from _David Wasserman_, Nov 18 2004

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Last modified April 25 11:39 EDT 2024. Contains 371969 sequences. (Running on oeis4.)