A079108 Number of 1's in the base 8 form of A077722(n).

3, 3, 3, 4, 3, 4, 5, 4, 5, 3, 4, 3, 5, 5, 5, 4, 3, 4, 5, 5, 5, 4, 5, 5, 4, 3, 4, 5, 5, 6, 6, 4, 5, 6, 8, 4, 5, 6, 6, 5, 3, 4, 4, 5, 6, 5, 3, 4, 6, 5, 6, 8, 6, 5, 4, 6, 8, 5, 5, 5, 6, 6, 8, 3, 4, 5, 4, 6, 6, 5, 6, 8, 4, 5, 5, 6, 5, 8, 4, 6, 8, 6, 8, 6, 8, 8, 8, 5, 6, 6, 5, 5, 5, 8, 4, 6, 6, 8, 8, 9, 6, 8, 5, 5, 4

Offset: 1

Author

Francois Jooste (phukraut(AT)hotmail.com), Dec 23 2002

Keywords

• nonn

Examples

			a(5)=3 since A077722(5)=32833, which has an octal form of 100101, which has 3 ones.
		

Crossrefs

Cf. A077722.

Programs

Maple

s := 0:for n from 1 to 7000 do b := convert(n,base,2):q := sum(b[i]*8^(i-1),i=1..nops(b)): if(isprime(q)) then s := s+1:a[s] := sum(b[i],i=1..nops(b)):fi:od:seq(a[k],k=1..s);

Extensions

More terms from Sascha Kurz, Feb 10 2003