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A079542 Triangular array: T(n,1)=T(n,n)=n and T(n,k)=LCM(T(n-1,k-1),T(n-1,k)) for 1<k<n. 1
1, 2, 2, 3, 2, 3, 4, 6, 6, 4, 5, 12, 6, 12, 5, 6, 60, 12, 12, 60, 6, 7, 60, 60, 12, 60, 60, 7, 8, 420, 60, 60, 60, 60, 420, 8, 9, 840, 420, 60, 60, 60, 420, 840, 9, 10, 2520, 840, 420, 60, 60, 420, 840, 2520, 10, 11, 2520, 2520, 840, 420, 60, 420, 840, 2520, 2520, 11, 12 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

T(2*n-1,n) = A058312(n-1) for n<=13.

LINKS

Table of n, a(n) for n=1..67.

EXAMPLE

Triangle begins:

1

2 2

3 2 3

4 6 6 4

5 12 6 12 5

6 60 12 12 60 6

7 60 60 12 60 60 7

CROSSREFS

Cf. A080046.

T(n, 2) = A003418(n-1) for n>2.

Sequence in context: A091256 A003990 A059896 * A220370 A022467 A169614

Adjacent sequences:  A079539 A079540 A079541 * A079543 A079544 A079545

KEYWORD

nonn,tabl

AUTHOR

Reinhard Zumkeller, Jan 22 2003

STATUS

approved

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Last modified May 20 12:34 EDT 2013. Contains 225460 sequences.