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A327782
Numbers n that cannot be written as a sum of two or more distinct parts with the largest part dividing n.
2
1, 2, 3, 4, 5, 7, 9, 11, 13, 17, 19, 23, 25, 29, 31, 35, 37, 41, 43, 47, 49, 53, 59, 61, 67, 71, 73, 77, 79, 83, 89, 97, 101, 103, 107, 109, 113, 121, 127, 131, 137, 139, 143, 149, 151, 157, 163, 167, 169, 173, 179, 181, 187, 191, 193, 197, 199, 209, 211, 221
OFFSET
1,2
COMMENTS
After initial terms, first differs from A308168 in having 209.
LINKS
Francisco Javier de Vega, Some Variants of Integer Multiplication, Axioms (2023) Vol. 12, 905. See p. 8.
MATHEMATICA
Select[Range[100], #==1||#-Divisors[#][[-2]]>Total[Range[Divisors[#][[-2]]-1]]&]
KEYWORD
nonn
AUTHOR
Gus Wiseman, Sep 25 2019
STATUS
approved