

A067473


Smallest ndigit square starting with 3.


2



36, 324, 3025, 30276, 300304, 3003289, 30008484, 300017041, 3000081529, 30000318436, 300000484729, 3000000666601, 30000004655076, 300000032019081, 3000000027329536, 30000000084216561, 300000000542063364
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OFFSET

2,1


LINKS

Table of n, a(n) for n=2..18.


FORMULA

a(n) = ceiling(sqrt(3*10^(n1)))^2, n>1.  Rick L. Shepherd, Feb 14 2002


PROG

(PARI) for(n=2, 25, a=ceil(sqrt(3*10^(n1)))^2; print(a))


CROSSREFS

Cf. A035070 (roots), A045786, A067479 (2..9).
Sequence in context: A017594 A014800 A213124 * A223299 A068075 A219004
Adjacent sequences: A067470 A067471 A067472 * A067474 A067475 A067476


KEYWORD

base,easy,nonn


AUTHOR

Amarnath Murthy, Feb 09 2002


EXTENSIONS

More terms from Rick L. Shepherd, Feb 14 2002


STATUS

approved



