A080324 Union of even squarefree numbers (A039956) and squarefree numbers for which the number of prime factors is even (A030229).

1, 2, 6, 10, 14, 15, 21, 22, 26, 30, 33, 34, 35, 38, 39, 42, 46, 51, 55, 57, 58, 62, 65, 66, 69, 70, 74, 77, 78, 82, 85, 86, 87, 91, 93, 94, 95, 102, 106, 110, 111, 114, 115, 118, 119, 122, 123, 129, 130, 133, 134, 138, 141, 142, 143, 145, 146, 154, 155, 158, 159, 161

Offset

1,2

Comments

k is a term of this sequence iff mu(k)^k > 0 respectively iff A080323(k) > 0.

Links

Table of n, a(n) for n=1..62.

Crossrefs

Cf. A008683, A030229, A039956, A056912, A080323.

Sequence in context: A364261 A263827 A281974 * A332951 A165562 A302796

Adjacent sequences: A080321 A080322 A080323 * A080325 A080326 A080327

Keyword

nonn

Author

Reinhard Zumkeller, Feb 14 2003

Extensions

Definition corrected by Georg Fischer at the suggestion of Amiram Eldar, Aug 17 2023

Status

approved