A020734 Pisot sequence L(4,10).

4, 10, 25, 63, 159, 402, 1017, 2573, 6510, 16472, 41679, 105461, 266850, 675216, 1708513, 4323086, 10938795, 27678662, 70035898, 177213300, 448406526, 1134612428, 2870933600, 7264383443, 18381221638, 46510390257, 117686215012, 297783895756, 753488830979

Offset

0,1

Links

Colin Barker, Table of n, a(n) for n = 0..1000

Prog

(PARI) pisotL(nmax, a1, a2) = {
  a=vector(nmax); a[1]=a1; a[2]=a2;
  for(n=3, nmax, a[n] = ceil(a[n-1]^2/a[n-2]));
  a
}
pisotL(50, 4, 10) \\ Colin Barker, Aug 07 2016

Crossrefs

See A008776 for definitions of Pisot sequences.

Sequence in context: A020748 A021004 A020709 * A225301 A298412 A289245

Adjacent sequences: A020731 A020732 A020733 * A020735 A020736 A020737

Keyword

nonn

Author

David W. Wilson

Status

approved