

A191576


Numbers n such that number of divisors of n equals the number of 1's in Gray code for n.


0



1, 2, 9, 10, 22, 25, 26, 34, 38, 46, 49, 58, 81, 94, 118, 121, 122, 134, 142, 148, 158, 164, 170, 172, 194, 206, 212, 226, 262, 292, 332, 356, 382, 386, 398, 404, 426, 428, 436, 446, 454, 478, 482, 502, 514, 526, 542, 548, 556, 578, 598, 602, 604, 618, 625
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OFFSET

1,2


COMMENTS

Numbers n such that A000005(n) = A005811(n).


LINKS

Table of n, a(n) for n=1..55.


PROG

(PARI) lista(nn) = {for (n=1, nn, if (numdiv(n)==sum(k=1, n, (1)^((k/2^valuation(k, 2)1)/2)), print1(n, ", ")); ); } \\ Michel Marcus, Apr 22 2013


CROSSREFS

Cf. A000005, A005811.
Sequence in context: A304441 A005695 A079747 * A081346 A301872 A290592
Adjacent sequences: A191573 A191574 A191575 * A191577 A191578 A191579


KEYWORD

nonn,base,less


AUTHOR

JuriStepan Gerasimov, Jun 06 2011


EXTENSIONS

Entries corrected by R. J. Mathar, Jun 07 2011


STATUS

approved



