0,2

Table of n, a(n) for n=0..9.

R. J. Mathar, Points on a line in the finite d-dimensional simple cubic lattice

Index entries for linear recurrences with constant coefficients, signature (18, -104, 192) conjectured.

Conjecture: a(n) = 8^n/2-3*4^n/2+6^n. a(n)= +18*a(n-1) -104*a(n-2) +192*a(n-3). G.f.: 4*x*(-1+7*x)/((6*x-1)*(8*x-1)*(4*x-1)). [R. J. Mathar, May 24 2010]

Cf. A005059.

Sequence in context: A259989 A030987 A297384 * A043039 A198962 A002754

Adjacent sequences: A178291 A178292 A178293 * A178295 A178296 A178297

nonn

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

approved