A128812 a(n)=(1+2^(1/3))^n.

1, 2, 5, 12, 26, 59, 133, 301, 680, 1538, 3475, 7853, 17747, 40106, 90637, 204833, 462905, 1046130, 2364171, 5342839, 12074394, 27287177, 61666867, 139362250, 314947683, 711756898, 1608514395, 3635115540, 8215074129

Offset

0,2

Links

Table of n, a(n) for n=0..28.

Maple

for n from 0 to 30 do a[n]:=round(evalf((1+2^(1/3))^n, 50)) od: seq(a[n], n=0..30);

Mathematica

With[{c=1+Surd[2, 3]}, Round[c^Range[0, 40]]] (* Harvey P. Dale, Aug 08 2013 *)

Crossrefs

Sequence in context: A033490 A221950 A116716 * A241692 A078410 A096766

Adjacent sequences: A128809 A128810 A128811 * A128813 A128814 A128815

Keyword

easy,nonn

Author

Miklos Kristof, Apr 10 2007

Status

approved