A204995 The index j<k such that n divides k^2-j^2, where k is the least index (A204905) for which such j exists.

1, 1, 1, 1, 2, 2, 3, 1, 4, 4, 5, 2, 6, 6, 1, 3, 8, 3, 9, 4, 2, 10, 11, 1, 5, 12, 3, 6, 14, 2, 15, 2, 4, 16, 1, 3, 18, 18, 5, 3, 20, 4, 21, 10, 2, 22, 23, 1, 7, 5, 7, 12, 26, 6, 3, 5, 8, 28, 29, 2

Offset

1,5

Comments

For a guide to related sequences, see A204892.

Links

Table of n, a(n) for n=1..60.

Mathematica

(See the program at A204994.)

Crossrefs

Cf. A204892, A204994.

Sequence in context: A304529 A071281 A361249 * A371907 A368400 A325099

Adjacent sequences: A204992 A204993 A204994 * A204996 A204997 A204998

Keyword

nonn

Author

Clark Kimberling, Jan 21 2012

Status

approved