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A215739 Even and odd composite squarefree numbers, interlaced. 0
6, 15, 10, 21, 14, 33, 22, 35, 26, 39, 30, 51, 34, 55, 38, 57, 42, 65, 46, 69, 58, 77, 62, 85, 66, 87, 70, 91, 74, 93, 78, 95, 82, 105, 86, 111, 94, 115, 102, 119, 106, 123, 110, 129, 114, 133, 118, 141, 122, 143, 130, 145, 134, 155, 138, 159, 142, 161, 146, 165 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..60.

FORMULA

For k=1,2,.., a(2k-1)=A039956(k+1), a(2k)=A024556(k); A039956 Even squarefree numbers, A024556 Odd squarefree composite numbers.

CROSSREFS

Cf. A120944.

Sequence in context: A202749 A123623 A240990 * A161397 A145257 A245200

Adjacent sequences:  A215736 A215737 A215738 * A215740 A215741 A215742

KEYWORD

nonn

AUTHOR

Zak Seidov, Aug 22 2012

STATUS

approved

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Last modified September 28 01:27 EDT 2021. Contains 347698 sequences. (Running on oeis4.)