A101360 a(n) = ceiling((3-sqrt(3))*4^(n-3)) + 1.

2, 2, 2, 3, 7, 22, 83, 326, 1300, 5195, 20776, 83098, 332387, 1329543, 5318166, 21272659, 85090631, 340362521, 1361450080, 5445800316, 21783201259, 87132805033, 348531220128, 1394124880509, 5576499522030, 22305998088117

Offset

0,1

Comments

Essentially the same as A094062: a(n) = A094062(n) for n>=2.

An approximation to the Camel Problem.

Links

Table of n, a(n) for n=0..25.

Maple

Digits:=100; seq(ceil((3-sqrt(3))*4^(n-3)) + 1, n=0..30);

Mathematica

With[{c=3-Sqrt[3]}, Ceiling[c*4^Range[-3, 30]]+1] (* Harvey P. Dale, Jan 27 2013 *)

Crossrefs

Cf. A094062.

Sequence in context: A181056 A200918 A134890 * A270371 A351108 A184311

Adjacent sequences: A101357 A101358 A101359 * A101361 A101362 A101363

Keyword

nonn

Author

Jorge Coveiro, Dec 25 2004

Status

approved