This site is supported by donations to The OEIS Foundation.

 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 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
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified October 21 06:58 EDT 2019. Contains 328292 sequences. (Running on oeis4.)