cp's OEIS Frontend

A076382 Numbers n such that sum of digits in base 4 is a divisor of sum of prime divisors (A008472).

%I A076382 #6 Mar 02 2015 16:08:49
%S A076382 2,3,4,8,9,16,26,32,42,64,65,78,81,84,86,92,94,95,104,114,115,119,128,
%T A076382 130,143,146,156,161,168,170,178,186,209,212,215,228,234,244,256,258,
%U A076382 259,260,287,294,308,312,319,322,326,332,335,336,338,340,342,343,344
%N A076382 Numbers n such that sum of digits in base 4 is a divisor of sum of prime divisors (A008472).
%p A076382 A076382 := 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 4); t1 := floor(t1/4); 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;
%Y A076382 Cf. A075657, A076380 - A076387.
%K A076382 nonn,base
%O A076382 1,1
%A A076382 _Floor van Lamoen_, Oct 08 2002