|
| |
|
|
A130694
|
|
Powers of 2 that contain all ten digits.
|
|
1
| |
|
|
68, 70, 79, 82, 84, 87, 88, 89, 94, 95, 96, 97, 98, 100, 101, 103, 104, 105, 106, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 144
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 1,1
|
|
|
COMMENTS
| It is believed that every power of 2 beyond 2^86 contains the digit 0.
A043537(A000079(a(n))) = 10. - Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Jul 29 2007
|
|
|
EXAMPLE
| 2^68 = 295147905179352825856.
|
|
|
MATHEMATICA
| A2 := {}; Do[If[Length[Union[ IntegerDigits[2^ n]]] == 10, A2 = Join[A2, {n}]], {n, 1, 200}]; Print[A2]
|
|
|
CROSSREFS
| Cf. A007377, A000079.
Sequence in context: A043862 A043871 A058906 * A153831 A058980 A079703
Adjacent sequences: A130691 A130692 A130693 * A130695 A130696 A130697
|
|
|
KEYWORD
| hard,nonn,base
|
|
|
AUTHOR
| Greg Dresden (dresdeng(AT)wlu.edu), Jul 10 2007
|
| |
|
|
