Pisot sequence P(4,11), a(0)=4, a(1)=11, a(n+1) is the nearest integer to a(n)^2/a(n-1). Evidently satisfies a(n) = 2*a(n-1)+2*a(n-2).
A021006
Pisot sequence P(4,11), a(0)=4, a(1)=11, a(n+1) is the nearest integer to a(n)^2/a(n-1). Evidently satisfies a(n) = 2*a(n-1)+2*a(n-2).
Terms
- a(0) =4a(1) =11a(2) =30a(3) =82a(4) =224a(5) =612a(6) =1672a(7) =4568a(8) =12480a(9) =34096a(10) =93152a(11) =254496a(12) =695296a(13) =1899584a(14) =5189760a(15) =14178688a(16) =38736896a(17) =105831168a(18) =289136128a(19) =789934592a(20) =2158141440a(21) =5896152064a(22) =16108587008a(23) =44009478144a(24) =120236130304a(25) =328491216896a(26) =897454694400
External references
- oeis: A021006