login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A062247 Let f(h) = A141900(h) = 2^h * 3^i * 5^j * ... be the smallest term in A141586 that is divisible by 2^h but not by 2^(h+1). Sequence gives values of h where i increases. 0
0, 2, 8, 24, 26, 48, 80, 120, 168, 242, 288, 360, 528, 728, 840, 960, 1330, 1368, 1680, 1848, 2186, 2208, 2808, 3480, 3720, 4488, 5040, 5328, 6240, 6560, 6888, 7920, 9408 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..33.

EXAMPLE

Pairs (h,i) where A141900 contains a term 2^h*3^i*... for the first time, with a dash if that value of i never occurs:

h i

0 0

2 1

- 2

8 3

24 4

26 5

48 6

80 7

- 8

120 9

168 10

242 11

288 12

360 13

528 14

728 15

840 16

960 17

1330 18

1368 19

1680 20

...

The missing values of i for h <= 10000 are 2, 8 and 26.

CROSSREFS

Cf. A141586, A141900.

Sequence in context: A303861 A138387 A007346 * A284951 A171261 A084744

Adjacent sequences:  A062244 A062245 A062246 * A062248 A062249 A062250

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Nov 24 2008

STATUS

approved

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified November 16 12:40 EST 2018. Contains 317272 sequences. (Running on oeis4.)