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A068122 Smallest number whose n-th power begins with concatenation of first n numbers; n-th root of A068121. 1
1, 11, 231, 1054, 262, 327531, 1989701, 43295162, 367895001, 51186035996, 1019341118828, 180978193207225, 24640811037579724, 861208311784429084, 470725434700902227811, 15603415956731968190389, 2613051323334500973960814 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

EXAMPLE

a(3) = 231 as 231^3=12326391 is the smallest cube beginning with 123.

CROSSREFS

Cf. A068121.

Sequence in context: A120850 A108518 A077736 * A015287 A169960 A045757

Adjacent sequences:  A068119 A068120 A068121 * A068123 A068124 A068125

KEYWORD

base,easy,nonn

AUTHOR

Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Feb 21 2002

EXTENSIONS

More terms from Robert Gerbicz (gerbicz(AT)freemail.hu), Sep 05 2002

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Last modified February 17 07:41 EST 2012. Contains 205998 sequences.