OFFSET
1,1
COMMENTS
Definition of LCQ_C: The least common non-divisor of type C (LCQ_C) of two positive integers a and b (a<=b) is the least positive non-divisor q of numbers a and b such that 1<=q common to a and b. LCQ_C(a, b) >= 2.
EXAMPLE
For n = 6, a(6) = 9 because LCQ_B(6, 1) = 4, LCQ_B(6, 2) = 4, LCQ_B(6, 3) = 4, LCQ_B(6, 4) = 5, LCQ_B(6, 5) = 4, LCQ_B(6, 6) = 4. Sum of results is 25.
CROSSREFS
KEYWORD
nonn
AUTHOR
Jaroslav Krizek, Nov 26 2011
STATUS
approved