A083426 a(n) = (4*7^n+2^n)/5.

1, 6, 40, 276, 1924, 13452, 94132, 658860, 4611892, 32282988, 225980404, 1581861804, 11073030580, 77511209964, 542578461556, 3798049214508, 26586344468788, 186104411215980, 1302730878380788, 9119116148403372

Offset: 0

Author

Paul Barry, Apr 30 2003

Keywords

• easy
• nonn

Comments

Binomial transform of A083066.

Links

• Index entries for linear recurrences with constant coefficients, signature (9,-14)

Crossrefs

Cf. A083066.

Programs

Mathematica

LinearRecurrence[{9,-14},{1,6},20] (* Harvey P. Dale, Oct 13 2015 *)

Formula

G.f.: (1-3*x)/((1-2*x)*(1-7*x)).

E.g.f.: (4*exp(7*x)+exp(2*x))/5.