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A139551
Triangle read by rows: T(n,k) = if n>=3*k and n<3*k*A014963(k-1) then k else 1 T(n,0)=1.
1
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 2, 3, 1, 1, 1, 1, 1, 1, 1, 1, 2, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 3, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 3, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1
OFFSET
0,24
COMMENTS
Row products give A139552.
EXAMPLE
Row products of the triangle are:
1 = 1
1*1 = 1
1*1*1 = 1
1*1*1*1 = 1
1*1*1*1*1 = 1
1*1*1*1*1*1 = 1
1*1*2*1*1*1*1 = 2
1*1*2*1*1*1*1*1 = 2
1*1*2*1*1*1*1*1*1 = 2
PROG
(Excel) =if(and(row()-1>=(column()-1)*3; row()-1 < A014963(k-1)*(column()-1)*3); column()-1; 1)
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Mats Granvik, Apr 27 2008
STATUS
approved