OFFSET
1,2
COMMENTS
The first (n-1) terms of the n-th row contain n-1 smallest natural numbers which have not occurred earlier and the last term is chosen to satisfy the requirement. Permutation A076105 is defined similarly, but k is allowed to be 1.
LINKS
EXAMPLE
Sixth row (14,15,16,17,18,100) has the sum 180 and by taking the next six least unused terms: (19,20,22,23,24,25), their sum is 133, for which 227 is the first unused term, so that sum 133+227 = 360 is a multiple of 180.
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Amarnath Murthy, Apr 27 2004
EXTENSIONS
Edited, extended and Scheme code added by Antti Karttunen, Aug 25 2006
STATUS
approved