0,1

R. K. Guy, personal communication.

a(n)=-(1/3)+(7/6)*[1/2-(1/2)*sqrt(13)]^n+(7/6)*[1/2+(1/2)*sqrt(13)]^n+(25/78)*sqrt(13)*[1/2+(1/2) *sqrt(13)]^n-(25/78)*[1/2-(1/2)*sqrt(13)]^n*sqrt(13), with n>=0 [From Paolo P. Lava (ppl(AT)spl.at), Jul 31 2008]

Adjacent sequences: A019482 A019483 A019484 this_sequence A019486 A019487 A019488

Sequence in context: A045623 A001410 A019486 this_sequence A018914 A129519 A034943

nonn

njas