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A027708 n-th prime has odd number of 1's in binary expansion and (n+1)st prime also has odd number of 1's. 1
4, 5, 11, 12, 17, 18, 21, 27, 28, 31, 32, 36, 39, 40, 41, 42, 43, 46, 47, 48, 49, 50, 51, 52, 53, 80, 81, 82, 83, 84, 85, 93, 94, 102, 103, 106, 110, 111, 112, 115, 118, 119, 120, 126, 127, 128, 129, 134, 135, 143, 144, 156, 157, 160, 161, 162, 163, 167, 168, 171 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

Table of n, a(n) for n=0..59.

CROSSREFS

Sequence in context: A178823 A188053 A261673 * A047374 A241653 A100107

Adjacent sequences:  A027705 A027706 A027707 * A027709 A027710 A027711

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane.

EXTENSIONS

More terms from Erich Friedman.

STATUS

approved

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Last modified November 19 20:42 EST 2019. Contains 329323 sequences. (Running on oeis4.)