A048576 Pisot sequence L(2,7).

2, 7, 25, 90, 324, 1167, 4204, 15145, 54561, 196561, 708130, 2551107, 9190611, 33110070, 119282248, 429725902, 1548129365, 5577286637, 20092717660, 72385969961, 260777498389, 939476306012, 3384554783333, 12193187851654, 43927145371633, 158251814371812

Offset

0,1

Links

Robert Israel, Table of n, a(n) for n = 0..1780

Maple

A[0]:= 2:
A[1]:= 7:
for n from 2 to 100 do
  A[n]:= ceil(A[n-1]^2/A[n-2])
od:
seq(A[i], i=0..100); # Robert Israel, Mar 01 2016

Crossrefs

See A008776 for definitions of Pisot sequences.

Sequence in context: A131430 A007484 A070859 * A018907 A052936 A108152

Adjacent sequences: A048573 A048574 A048575 * A048577 A048578 A048579

Keyword

nonn

Author

David W. Wilson

Status

approved