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A336557
Numbers k such that A336456(n) = Product_{p^e|n} A336456(p^e). Here each p^e is the maximal power of prime p that divides k, and A336456(n) = A335915(sigma(sigma(n))).
6
1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 23, 24, 25, 26, 27, 28, 29, 31, 32, 36, 37, 38, 39, 41, 43, 44, 45, 47, 48, 49, 50, 51, 53, 54, 56, 59, 60, 61, 62, 63, 64, 67, 68, 71, 72, 73, 74, 75, 76, 78, 79, 80, 81, 83, 86, 87, 89, 92, 95, 96, 97, 99, 100, 101, 103, 104, 107, 108, 109, 111, 112
OFFSET
1,2
COMMENTS
Numbers at which points A336456 appears to be multiplicative.
LINKS
CROSSREFS
Cf. A336556 (characteristic function), A336558 (complement).
Union of A000961 and A336559.
Union of A336547 and A336560.
Sequence in context: A014089 A065039 A171397 * A335235 A023804 A342851
KEYWORD
nonn
AUTHOR
Antti Karttunen, Jul 25 2020
STATUS
approved