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

 

Logo

Annual Appeal: Today, Nov 11 2014, is the 4th anniversary of the launch of the new OEIS web site. 70,000 sequences have been added in these four years, all edited by volunteers. Please make a donation (tax deductible in the US) to help keep the OEIS running.

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A076385 Numbers n such that sum of digits in base 7 is a divisor of sum of prime divisors (A008472). 1
2, 3, 5, 7, 8, 9, 42, 49, 78, 84, 105, 114, 115, 126, 130, 154, 156, 161, 168, 170, 186, 228, 235, 252, 258, 294, 305, 336, 343, 350, 357, 366, 371, 372, 378, 402, 410, 425, 429, 430, 434, 442, 444, 455, 456, 460, 474, 504, 516, 520, 555, 558, 574, 588, 616 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

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

MAPLE

A076385 := proc(n) local i, j, t, t1, sod, sopd; t := NULL; for i from 2 to n do t1 := i; sod := 0; while t1 <> 0 do sod := sod + (t1 mod 7); t1 := floor(t1/7); od; sopd := 0; j := 1; while ithprime(j) <= i do if i mod ithprime(j) = 0 then sopd := sopd+ithprime(j); fi; j := j+1; od; if sopd mod sod = 0 then t := t, i; fi; od; t; end;

CROSSREFS

Cf. A075657, A076380 - A076387.

Sequence in context: A171614 A029601 A182758 * A152604 A028788 A197128

Adjacent sequences:  A076382 A076383 A076384 * A076386 A076387 A076388

KEYWORD

nonn,base

AUTHOR

Floor van Lamoen (fvlamoen(AT)hotmail.com), Oct 08 2002

STATUS

approved

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

Content is available under The OEIS End-User License Agreement .

Last modified December 18 15:54 EST 2014. Contains 252163 sequences.