A081325 sigma(n^2) modulo 4.

1, 3, 1, 3, 3, 3, 1, 3, 1, 1, 1, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 3, 1, 3, 1, 1, 1, 3, 3, 1, 1, 3, 1, 1, 3, 3, 3, 3, 3, 1, 3, 3, 1, 3, 3, 3, 1, 3, 1, 3, 3, 1, 3, 3, 3, 3, 1, 1, 1, 1, 3, 3, 1, 3, 1, 3, 1, 1, 1, 1, 1, 3, 3, 1, 1, 3, 1, 1, 1, 1, 1, 1, 1, 3, 1, 3, 3, 3, 3, 1, 3, 3, 1, 3, 3, 3, 3, 3, 1, 3, 3, 1, 1, 1, 3

Offset

1,2

Links

Table of n, a(n) for n=1..105.

Crossrefs

Sequence in context: A143149 A268498 A059787 * A132680 A105595 A072219

Adjacent sequences: A081322 A081323 A081324 * A081326 A081327 A081328

Keyword

nonn

Author

Benoit Cloitre, Apr 20 2003

Status

approved