login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A191476 Values of j of the numbers  2^i*3^j (A033845). 5
1, 1, 2, 1, 2, 1, 3, 2, 1, 3, 2, 4, 1, 3, 2, 4, 1, 3, 5, 2, 4, 1, 3, 5, 2, 4, 6, 1, 3, 5, 2, 4, 6, 1, 3, 5, 7, 2, 4, 6, 1, 3, 5, 7, 2, 4, 6, 1, 8, 3, 5, 7, 2, 4, 6, 1, 8, 3, 5, 7, 2, 9, 4, 6, 1, 8, 3, 5, 7, 2, 9, 4, 6, 1, 8, 3, 10, 5, 7, 2, 9, 4, 6, 1, 8, 3 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

Not the same as A134583.

LINKS

Zak Seidov, Table of n, a(n) for n = 1..10000

EXAMPLE

a(10) = 3 because A033845(10) = 108 = 2^2*3^3.

a(100) = 7 because A033845(100) = 59872 = 2^8*3^7.

a(1000) = 1 because A033845(1000) = 216172782113783808 = 2^56*3^1.

MATHEMATICA

mx = 1000000; t = Select[Sort[Flatten[Table[2^i 3^j, {i, Log[2, mx]}, {j, Log[3, mx]}]]], # <= mx &]; Table[FactorInteger[i][[2, 2]], {i, t}] (* T. D. Noe, Aug 31 2012 *)

CROSSREFS

Cf. A033845 (numbers  2^i*3^j), A191475 (values of i), A134583.

Sequence in context: A292224 A023130 A084532 * A134583 A087467 A231568

Adjacent sequences:  A191473 A191474 A191475 * A191477 A191478 A191479

KEYWORD

nonn

AUTHOR

Zak Seidov, Aug 30 2012

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified May 23 23:07 EDT 2022. Contains 353993 sequences. (Running on oeis4.)