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

1,2

Comments

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

Links

Table of n, a(n) for n=1..7.

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

Crossrefs

Cf. A094405.

Sequence in context: A322489 A063430 A031104 * A191461 A366957 A098561

Adjacent sequences: A115039 A115040 A115041 * A115043 A115044 A115045

Keyword

nonn,fini,full

Author

Zak Seidov, Feb 27 2006

Extensions

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

Status

approved