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A097408
Initial decimal digit of n^4.
7
1, 1, 8, 2, 6, 1, 2, 4, 6, 1, 1, 2, 2, 3, 5, 6, 8, 1, 1, 1, 1, 2, 2, 3, 3, 4, 5, 6, 7, 8, 9, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 4, 4, 4, 5, 5, 6, 6, 7, 7, 8, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 5, 5, 5, 5, 6, 6, 6, 7, 7, 7, 8, 8, 8, 9, 9, 1, 1, 1, 1, 1, 1
OFFSET
1,3
LINKS
Eric Weisstein's World of Mathematics, Gelfand's Question
EXAMPLE
1, 16, 81, 256, 625, 1296, 2401, 4096, 6561, 10000, ...
MAPLE
a:= n-> parse(""||(n^4)[1]):
seq(a(n), n=1..120); # Alois P. Heinz, Jan 28 2016
KEYWORD
nonn,base,easy
AUTHOR
Eric W. Weisstein, Aug 16 2004
STATUS
approved