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A152259 Union of values: A147568(n) and 2*A147568(n)-1 0
3, 5, 9, 11, 13, 21, 25, 35, 37, 43, 45, 69, 73, 85, 89, 131, 133, 139, 141, 163, 165, 171, 173, 261, 265, 277, 281, 325, 329, 341, 345, 515, 517, 523, 525, 547, 549, 555, 557, 643, 645, 651, 653, 675, 677, 683, 1029, 1033, 1045, 1049, 1093, 1097, 1109, 1113, 1285, 1289 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Every even N>=6 is a sum of two terms of the sequence.

LINKS

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

PROG

(PARI) a147568(n) = 2*fromdigits(binary(n), 4) + 3;

lista(nn) = {my(v = vector(2*nn+2), ind = 0); for (n=0, nn, my(x = a147568(n)); v[ind++] = x; v[ind++] = 2*x - 1); vecsort(v, , 8); } \\ Michel Marcus, Dec 18 2018

CROSSREFS

Cf. A147568, A145819, A145812.

Sequence in context: A204657 A167791 A139099 * A219611 A003071 A178442

Adjacent sequences:  A152256 A152257 A152258 * A152260 A152261 A152262

KEYWORD

nonn

AUTHOR

Vladimir Shevelev, Dec 01 2008

EXTENSIONS

More terms from Michel Marcus, Dec 18 2018

STATUS

approved

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Last modified May 7 20:36 EDT 2021. Contains 343652 sequences. (Running on oeis4.)