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A281298 a(n) is the n-th decimal digit from the right in n^n. 1
1, 0, 0, 0, 0, 0, 0, 1, 3, 0, 8, 9, 2, 1, 8, 6, 4, 4, 9, 0, 0, 7, 9, 8, 0, 0, 0, 3, 1, 0, 5, 1, 8, 1, 5, 7, 8, 2, 4, 0, 4, 1, 8, 7, 4, 0, 3, 8, 1, 0, 6, 1, 3, 8, 3, 4, 9, 3, 3, 0, 1, 1, 9, 6, 8, 2, 1, 6, 5, 0, 8, 6, 8, 5, 0, 7, 1, 1, 2, 0, 3, 8, 3, 3, 3, 8, 2, 5, 3, 0, 4, 1, 0, 6, 3, 5, 3, 2, 7, 0 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,9

COMMENTS

If 2 <= n <= 7, n^n has fewer than n digits, so a(n) is taken to be 0.

a(n) = 0 if n is divisible by 10.

LINKS

Robert Israel, Table of n, a(n) for n = 1..10000

EXAMPLE

8^8 = 16777216 so a(8) = 1.

MAPLE

seq(10^(1-m)*((m &^m mod 10^m) - (m &^ m mod 10^(m-1))), m=1..1000);

CROSSREFS

Cf. A000312.

Sequence in context: A181977 A199659 A201584 * A095123 A019691 A192919

Adjacent sequences:  A281295 A281296 A281297 * A281299 A281300 A281301

KEYWORD

nonn,base

AUTHOR

Robert Israel, Jan 19 2017

STATUS

approved

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Last modified November 24 07:33 EST 2020. Contains 338607 sequences. (Running on oeis4.)