A086809 Indices k where A057176(k) = 2.

2, 5, 8, 34, 65, 144, 296, 401, 490, 520, 2165, 3590, 4640, 4828, 6828, 8704, 17675, 21164, 52883, 84762, 162069, 358838, 1463826, 1593474, 1668393, 2086706, 4364420, 20471838, 31960444

Offset

1,1

Comments

By definition of the sequence, A087045(n) + 1 for every n > 0 is in the sequence.

No more terms < 3870000. - David Wasserman, Mar 31 2005

Links

Table of n, a(n) for n=1..29.

Mathematica

a[m_] := a[m] = Sum[ a[j], {j, 0, Mod[ a[m - 1], m]}]; vv = {}; Do[ a[n] = If[ n == 0, 1, b]; v = a[n + 1]; b = v; If[ v == 2, AppendTo[ vv, n + 1]; Print[n + 1]], {n, 0, 165000}]

Crossrefs

Cf. A057176, A087045.

Sequence in context: A140275 A025533 A295970 * A153863 A153890 A130378

Adjacent sequences: A086806 A086807 A086808 * A086810 A086811 A086812

Keyword

nonn,more

Author

Farideh Firoozbakht, Aug 05 2003

Extensions

Extended by Robert G. Wilson v, Aug 07 2003

More terms from David Wasserman, Mar 31 2005

a(27)-a(29) from Michael S. Branicky, Mar 23 2024

Status

approved