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A293335
Least integer k such that k/2^n > sqrt(1/5).
3
1, 1, 2, 4, 8, 15, 29, 58, 115, 229, 458, 916, 1832, 3664, 7328, 14655, 29309, 58618, 117235, 234469, 468938, 937875, 1875750, 3751500, 7503000, 15005999, 30011997, 60023993, 120047986, 240095971, 480191942, 960383884, 1920767767, 3841535534, 7683071068
OFFSET
0,3
LINKS
FORMULA
a(n) = ceiling(r*2^n), where r = sqrt(1/5).
a(n) = A293336(n) + 1.
MATHEMATICA
z = 120; r = Sqrt[1/5];
Table[Floor[r*2^n], {n, 0, z}]; (* A293334 *)
Table[Ceiling[r*2^n], {n, 0, z}]; (* A293335 *)
Table[Round[r*2^n], {n, 0, z}]; (* A293336 *)
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Clark Kimberling, Oct 10 2017
STATUS
approved