0,2

Table of n, a(n) for n=0..8.

Index entries for linear recurrences with constant coefficients, signature (27, -239, 693) conjectured.

Conjecture: a(n) = 11^n/2+5*9^n/2-3*7^n. a(n)= 27*a(n-1) -239*a(n-2) +693*a(n-3). G.f.: x*(-7+73*x)/((11*x-1)*(7*x-1)*(9*x-1)). [R. J. Mathar May 24 2010]

Sequence in context: A063399 A220181 A328813 * A285394 A339390 A251585

Adjacent sequences: A178294 A178295 A178296 * A178298 A178299 A178300

nonn

R. H. Hardin, suggested by R. J. Mathar in the Sequence Fans Mailing List, May 24 2010

approved