A081334 sigma(2*n^2) modulo 4.

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

Offset

1,1

Links

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

Crossrefs

See also A065765.

Sequence in context: A358691 A172368 A138070 * A106694 A183051 A031355

Adjacent sequences: A081331 A081332 A081333 * A081335 A081336 A081337

Keyword

nonn

Author

Benoit Cloitre, Apr 20 2003

Status

approved