A199310 - OEIS

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A199310

7*5^n+1.

8, 36, 176, 876, 4376, 21876, 109376, 546876, 2734376, 13671876, 68359376, 341796876, 1708984376, 8544921876, 42724609376, 213623046876, 1068115234376, 5340576171876, 26702880859376, 133514404296876, 667572021484376

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OFFSET

0,1

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 0..1000

Index entries for linear recurrences with constant coefficients, signature (6,-5).

FORMULA

a(n) = 5*a(n-1)-4.

a(n) = 6*a(n-1)-5*a(n-2).

G.f.: (8-12*x)/((1-x)*(1-5*x)).

PROG

(Magma) [7*5^n+1: n in [0..30]];