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A091793 Triangle read by rows in which row n contains the smallest nontrivial set of n consecutive numbers divisible by the next n numbers respectively. The next n numbers are numbers from n(n-1)/2 +1 up to n(n+1)/2. 2
2, 8, 9, 64, 65, 66, 2527, 2528, 2529, 2530, 60071, 60072, 60073, 60074, 60075, 1627936, 1627937, 1627938, 1627939, 1627940, 1627941, 124324222, 124324223, 124324224, 124324225, 124324226, 124324227, 124324228, 1694579069 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

The first term of the n-th row is LCM of the next n numbers + first among them. r the n-th row contains n consecutive numbers beginning with LCM of {(n(n-1)/2 +1),(n(n-1)/2 +2),... up to (n(n+1)/2)} + n(n-1)/2 +1.

LINKS

Table of n, a(n) for n=1..29.

FORMULA

a(n, k) = A061431(n)+k+n*(n-1)/2. - David Wasserman, Dec 22 2005

EXAMPLE

2; 8,9; 64,65,66; 2527,2528,2529,2530; ...

CROSSREFS

Cf. A091794, A091795.

Sequence in context: A181476 A055678 A301281 * A109351 A111134 A036898

Adjacent sequences:  A091790 A091791 A091792 * A091794 A091795 A091796

KEYWORD

nonn,tabl

AUTHOR

Amarnath Murthy, Feb 18 2004

EXTENSIONS

More terms from David Wasserman, Dec 22 2005

STATUS

approved

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Last modified July 5 01:22 EDT 2020. Contains 335457 sequences. (Running on oeis4.)