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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A273014 Least k such that A067128(k) is divisible by n. 2
1, 2, 3, 4, 7, 5, 17, 6, 9, 7, 33, 8, 49, 17, 12, 14, 67, 9, 104, 10, 17, 33, 161, 11, 31, 49, 20, 17, 249, 12, 273, 19, 33, 67, 27, 13, 318, 104, 49, 21, 324, 17, 405, 33, 18, 161, 538, 14, 142, 31, 67, 49, 586, 20, 33, 22, 104, 249, 721, 15, 766, 273, 29, 58, 49, 33, 1127, 67, 161, 27, 1252, 16, 1256, 318, 31, 104, 48, 49 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

David A. Corneth, Table of n, a(n) for n = 1..178

EXAMPLE

A067128(17) = 84. 84 is divisible by the 7. For any m < 17, A067128(m) is not divisible by 7, so a(7) = 17.

MATHEMATICA

a = {}; b = {0}; Do[If[# >= Max@ b, AppendTo[a, k] && AppendTo[b, #]] &@ DivisorSigma[0, k], {k, 10^7}]; Table[k = 1; While[! Divisible[a[[k]], n], k++]; k, {n, 22}] (* Michael De Vlieger, May 15 2016, for more terms use b-file data at A067128 *)

CROSSREFS

Cf. A034287, A067128.

Sequence in context: A245703 A260426 A167151 * A072275 A122989 A222246

Adjacent sequences:  A273011 A273012 A273013 * A273015 A273016 A273017

KEYWORD

nonn

AUTHOR

David A. Corneth, May 13 2016

EXTENSIONS

a(20)-a(64) from Peter J. C. Moses, May 13 2016

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.

License Agreements, Terms of Use, Privacy Policy. .

Last modified November 15 06:26 EST 2019. Contains 329144 sequences. (Running on oeis4.)