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A108690 Square roots of the terms in A080160. 1
1, 2, 3, 4, 5, 6, 7, 8, 9, 18, 21, 24, 27, 30, 33, 36, 45, 48, 51, 54, 57, 60, 63, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 99, 102, 105, 108, 111, 114, 117, 126, 129, 132, 135, 138, 141, 144, 153, 154, 155, 156, 157, 158, 159, 160 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

MAPLE

b:=n->sum(convert(((10^(n+1)-1)/9)^2, base, 10)[j], j=1..2*n+1): a:=proc(n) if type(sqrt(b(n)), integer)=true then sqrt(b(n)) else fi end:seq(a(n), n=0..2000); (Deutsch)

CROSSREFS

Sequence in context: A032888 A023791 A067043 * A032944 A048409 A066565

Adjacent sequences:  A108687 A108688 A108689 * A108691 A108692 A108693

KEYWORD

nonn,base

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com), Jun 19 2005

EXTENSIONS

More terms from Emeric Deutsch (deutsch(AT)duke.poly.edu), Jun 19 2005

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Last modified February 14 07:16 EST 2012. Contains 205589 sequences.