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A072577 Numbers n such that n and the n-th prime have the same number of 0's in their binary representation. 4
5, 6, 20, 22, 24, 28, 31, 32, 34, 37, 41, 42, 49, 50, 67, 68, 81, 82, 84, 88, 89, 93, 94, 138, 139, 140, 141, 142, 143, 147, 151, 157, 165, 192, 194, 198, 200, 202, 206, 207, 232, 236, 241, 262, 265, 270, 271, 284, 285, 295, 301, 328, 329, 332, 333, 337 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

A023416(a(n))=A023416(A072580(n))=A035103(n);

a(n)=A049084(A072580(n)).

LINKS

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

EXAMPLE

In binary representation 20 and A000040(20)=71 have three 0's: 13='10100' and 71='1000111', therefore 20 is a term.

CROSSREFS

Cf. A071600, A072578, A072579.

Sequence in context: A129722 A133608 A317444 * A231182 A231181 A259775

Adjacent sequences:  A072574 A072575 A072576 * A072578 A072579 A072580

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller, Jun 23 2002

STATUS

approved

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Last modified September 30 11:55 EDT 2020. Contains 337439 sequences. (Running on oeis4.)