A097411 Initial decimal digit of n^7.

1, 1, 2, 1, 7, 2, 8, 2, 4, 1, 1, 3, 6, 1, 1, 2, 4, 6, 8, 1, 1, 2, 3, 4, 6, 8, 1, 1, 1, 2, 2, 3, 4, 5, 6, 7, 9, 1, 1, 1, 1, 2, 2, 3, 3, 4, 5, 5, 6, 7, 8, 1, 1, 1, 1, 1, 1, 2, 2, 2, 3, 3, 3, 4, 4, 5, 6, 6, 7, 8, 9, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 3, 3, 3, 4, 4, 4, 5, 5, 6, 6, 6, 7, 8, 8, 9, 1, 1, 1, 1

Offset: 1

Author

Eric W. Weisstein, Aug 16 2004

Keywords

• nonn
• base
• easy

Examples

			1, 128, 2187, 16384, 78125, 279936, 823543, 2097152, 4782969, 10000000, ...
		

Links

• Eric Weisstein's World of Mathematics, Gelfand's Question

Crossrefs

Cf. A000027, A002993, A002994, A097408, A097409, A097410, A097412, A097413, A097414.

Programs

Mathematica

Table[First[IntegerDigits[n^7]],{n,110}] (* Harvey P. Dale, Mar 17 2019 *)

Extensions

1 prepended by Harvey P. Dale, Mar 17 2019