1,2

G. Tollisen and T. Lengyel, A congruential identity ..., Integers 4 (2004), #A4.

(PARI) a(n) = polcoeff(((1+x)^n)%(x^4+1), 1)

Cf. A099586, A099588, A099589.

Sequence in context: A009810 A111362 A134581 this_sequence A014292 A066078 A058339

Adjacent sequences: A099584 A099585 A099586 this_sequence A099588 A099589 A099590

sign

Ralf Stephan, Oct 24 2004