A359596 Positions of odd terms in A358777.

1, 9, 15, 21, 25, 33, 35, 39, 49, 51, 55, 57, 65, 69, 77, 85, 87, 91, 93, 95, 111, 115, 119, 121, 123, 129, 133, 135, 141, 143, 145, 155, 159, 161, 169, 177, 183, 185, 187, 189, 201, 203, 205, 209, 213, 215, 217, 219, 221, 235, 237, 247, 249, 253, 259, 265, 267, 287, 289, 291, 295, 297, 299, 301, 303

Offset: 1

Author

Antti Karttunen, Jan 09 2023

Keywords

• nonn

Comments

After the initial 1, 135 = 3^3 * 5 is the next term that is not an odd semiprime (A046315). See A359597.

Crossrefs

Positions of odd terms in A358777 and in A359589.

Union of A046315 and A359597.

Subsequence of A046337.

Cf. A353557, A359595 (characteristic function).

Programs

PARI

isA359596(n) = A359595(n);