a(n) = ( (7 + sqrt(6))^n - (7 - sqrt(6))^n )/(2*sqrt(6)).
A154239
a(n) = ( (7 + sqrt(6))^n - (7 - sqrt(6))^n )/(2*sqrt(6)).
Terms
- a(0) =1a(1) =14a(2) =153a(3) =1540a(4) =14981a(5) =143514a(6) =1365013a(7) =12939080a(8) =122451561a(9) =1157941414a(10) =10945762673a(11) =103449196620a(12) =977620957741
External references
- oeis: A154239