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A230456 Odd evil a(n) (A001969), such that 3*a(n) and a(n)+3 are odious (A000069). 0
23, 29, 39, 71, 95, 119, 125, 135, 159, 263, 287, 343, 349, 359, 373, 383, 407, 413, 423, 437, 469, 479, 503, 509, 519, 543, 599, 605, 615, 629, 639, 663, 669, 679, 711, 741, 791, 797, 807, 839, 869, 917, 933, 1031, 1055, 1111, 1117, 1127, 1141, 1151, 1175 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Or a(n) is odd number such that the polynomial x^2 - (a(n)+3)*x + 3*a(n) has odious coefficients and evil roots.

3*a(n) is in the A224072.

LINKS

Table of n, a(n) for n=1..51.

MATHEMATICA

evilQ[n_]:=EvenQ[DigitCount[n, 2][[1]]]; odiousQ[n_]:=OddQ[DigitCount[n, 2][[1]]]; Select[Range[3000], OddQ[#] && evilQ[#] && odiousQ[3#] && odiousQ[#+3]&] (* Peter J. C. Moses, Oct 19 2013 *)

CROSSREFS

Cf. A000069, A001969, A224072.

Sequence in context: A101784 A101802 A156983 * A174196 A144226 A173709

Adjacent sequences:  A230453 A230454 A230455 * A230457 A230458 A230459

KEYWORD

nonn,base

AUTHOR

Vladimir Shevelev, Oct 19 2013

EXTENSIONS

More terms from Peter J. C. Moses, Oct 19 2013

STATUS

approved

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Last modified August 7 04:39 EDT 2020. Contains 336274 sequences. (Running on oeis4.)