OFFSET
1,3
EXAMPLE
The least common multiple of the first few rows are:
lcm{1} = 1
lcm{1,2} = 2
lcm{1,2,3} = 6
lcm{1,1,3,4} = 12
lcm{1,1,3,4,5} = 60
lcm{1,1,3,4,5,7} = 420
lcm{1,1,3,1,5,7,8} = 840
lcm{1,1,1,1,5,7,8,9} = 2520
lcm{1,1,1,1,5,7,8,9,11} = 27720
Multiplying the terms in the rows produces the same result:
1 = 1
1*2 = 2
1*2*3 = 6
1*1*3*4 = 12
1*1*3*4*5 = 60
1*1*3*4*5*7 = 420
1*1*3*1*5*7*8 = 840
1*1*1*1*5*7*8*9 = 2520
1*1*1*1*5*7*8*9*11 = 27720
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Mats Granvik, Jan 24 2008
STATUS
approved