A067448 Smallest n-th power whose decimal expansion starts with 7.

7, 729, 729, 707281, 7776, 729, 78125, 78310985281, 794280046581, 79792266297612001, 743008370688, 7355827511386641, 793714773254144, 78364164096, 734461618571137961752599, 79766443076872509863361

Offset

1,1

Comments

Terms from Robert G. Wilson v.

Links

Table of n, a(n) for n=1..16.

Mathematica

a = {}; Do[k = 1; While[First[IntegerDigits[k^n]] != 7, k++ ]; a = Append[a, k^n], {n, 1, 25}]; a (* Robert G. Wilson v *)

Crossrefs

Cf. A067442, A067443, A067444, A067445, A067446, A067447.

Sequence in context: A201485 A083978 A162138 * A249897 A249834 A064571

Adjacent sequences: A067445 A067446 A067447 * A067449 A067450 A067451

Keyword

base,easy,nonn

Author

Amarnath Murthy, Feb 05 2002

Status

approved