A115042 Positions of 1's in A094405, "a(n) = sum of all previous terms modulo n, a(1)=1".

1, 2, 18, 24, 35, 40, 252

Offset: 1

Author

Zak Seidov, Feb 27 2006

Keywords

• nonn
• fini
• full

Comments

Positions of 0's: 4, 9, 333.

Crossrefs

Cf. A094405.

Programs

Maple

Res:= 1;
s:= 1:
for n from 2 to 397 do
  a:= s mod n;
  s:= s+a;
  if a = 1 then Res:= Res, n fi;
od:
Res; # Robert Israel, Aug 16 2018

Extensions

Keywords fini,full added by Robert Israel, Aug 16 2018