A116490 Numbers that can be written as a product of evil numbers (A001969) and of odious numbers (A000069).

1, 25, 50, 69, 77, 81, 87, 100, 115, 117, 138, 145, 147, 154, 162, 169, 171, 174, 175, 200, 209, 213, 230, 231, 234, 245, 261, 265, 275, 276, 285, 287, 289, 290, 294, 308, 324, 325, 329, 333, 338, 339, 342, 343, 345, 348, 350, 351, 355, 357, 369, 375, 385

Offset

1,2

Comments

Numbers such that A116488(n) != 0 and A116489(n) != 0.

If m is in the sequence then so is 2*m for m > 1. - David A. Corneth, Mar 27 2021

Links

David A. Corneth, Table of n, a(n) for n = 1..12272

Example

77 is in the sequence as it's the product of odious numbers via 7*11 and of evil numbers via 1*77. - David A. Corneth, Mar 27 2021

Crossrefs

Cf. A000069, A001969, A116489, A116490

Sequence in context: A009177 A118882 A085625 * A230213 A338890 A008607

Adjacent sequences: A116487 A116488 A116489 * A116491 A116492 A116493

Keyword

nonn

Author

Christian G. Bower, Feb 17 2006

Status

approved