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A082664
Numbers k such that A082647(k) = A000005(k) - 1.
2
2, 3, 5, 7, 9, 11, 13, 15, 17, 19, 23, 25, 29, 31, 35, 37, 41, 43, 47, 49, 53, 59, 61, 67, 71, 73, 77, 79, 83, 89, 91, 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, 223
OFFSET
1,1
LINKS
MATHEMATICA
aQ[n_] := DivisorSum[n, 1 &, EvenQ[#] || # >= Sqrt[2n] &] == 1; Select[Range[250], aQ] (* Amiram Eldar, Jul 11 2019 *)
CROSSREFS
Sequence in context: A092919 A005357 A324697 * A342008 A095737 A054022
KEYWORD
easy,nonn
AUTHOR
Naohiro Nomoto, May 18 2003
STATUS
approved