A152621 a(n)=8*a(n-1)-6*a(n-2), n>1 ; a(0)=1, a(1)=2.

1, 2, 10, 68, 484, 3464, 24808, 177680, 1272592, 9114656, 65281696, 467565632, 3348834880, 23985285248, 171789272704, 1230402470144, 8812484124928, 63117458178560, 452064760678912, 3237813336359936, 23190118126806016

Offset: 0

Author

Philippe Deléham, Dec 10 2008

Keywords

• nonn
• easy

Comments

Unsigned version of A152620.

Links

• Harvey P. Dale, Table of n, a(n) for n = 0..1000
• Index entries for linear recurrences with constant coefficients, signature (8,-6)

Programs

Mathematica

LinearRecurrence[{8,-6},{1,2},30] (* Harvey P. Dale, Jun 19 2022 *)

Formula

G.f.: (1-6*x)/(1-8*x+6*x^2).