A069042 Numbers n such that the n-th Euler number (A000364) == 1 (mod n^2).

2, 17, 37, 1153, 1303

Offset

1,1

Links

Table of n, a(n) for n=1..5.

Mathematica

Select[Range[2, 10000], Divisible[Abs[EulerE[2*#]] - 1, #^2] &] (* Amiram Eldar, Jun 03 2017 *)

Crossrefs

Cf. A000364, A081730.

Sequence in context: A307161 A294560 A258977 * A121923 A212276 A000956

Adjacent sequences: A069039 A069040 A069041 * A069043 A069044 A069045

Keyword

nonn,more

Author

Benoit Cloitre, Apr 06 2003

Extensions

More terms from Hans Havermann, Apr 07 2003

Status

approved