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A079250 Even numbers in A079000. 3
4, 6, 8, 16, 18, 20, 34, 36, 38, 40, 42, 44, 70, 72, 74, 76, 78, 80, 82, 84, 86, 88, 90, 92, 142, 144, 146, 148, 150, 152, 154, 156, 158, 160, 162, 164, 166, 168, 170, 172, 174, 176, 178, 180, 182, 184, 186, 188, 286, 288, 290, 292, 294, 296, 298, 300 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..56.

B. Cloitre, N. J. A. Sloane and M. J. Vandermast, Numerical analogues of Aronson's sequence, J. Integer Seqs., Vol. 6 (2003), #03.2.2.

B. Cloitre, N. J. A. Sloane and M. J. Vandermast, Numerical analogues of Aronson's sequence (math.NT/0305308)

FORMULA

{4, 6, 8} and Union_{k >=1} {2i : 9*2^(k-1)-1 <= i <= 3*2^(k+1)-2 }.

MATHEMATICA

(* b = A079000 *) b[1] = 1; b[n_] := (k = Floor[Log[2, (n + 3)/6]]; j = n - (9*2^k - 3); 12*2^k - 3 + 3*j/2 + Abs[j]/2);

Select[Array[b, 300], EvenQ] (* Jean-François Alcover, Sep 04 2018 *)

CROSSREFS

Sequence in context: A239659 A154387 A095299 * A055397 A239412 A295006

Adjacent sequences:  A079247 A079248 A079249 * A079251 A079252 A079253

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Feb 04 2003

STATUS

approved

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Last modified November 30 20:17 EST 2021. Contains 349425 sequences. (Running on oeis4.)