The On-Line Encyclopedia of Integer Sequences (OEIS)

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Revision History for A078187

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A078187

Smaller of the two successive squares which differ in the use of only one digit.
(history; published version)

#8 by N. J. A. Sloane at Thu Dec 05 19:55:56 EST 2013

AUTHOR

_Amarnath Murthy (amarnath_murthy(AT)yahoo.com), _, Nov 21 2002

Discussion

Thu Dec 05

19:55

OEIS Server: https://oeis.org/edit/global/2075

#7 by Russ Cox at Sat Mar 31 14:00:55 EDT 2012

EXTENSIONS

Extended and edited by _D. S. McNeil (mcneil(AT)hku.hk), _, Nov 20 2010

Discussion

Sat Mar 31

14:00

OEIS Server: https://oeis.org/edit/global/909

#6 by Ralf Stephan at Sat Nov 20 03:28:14 EST 2010

STATUS

reviewed

approved

#5 by D. S. McNeil at Sat Nov 20 03:04:28 EST 2010

STATUS

proposed

reviewed

#4 by D. S. McNeil at Sat Nov 20 03:04:01 EST 2010

COMMENTS

Conjecture: sequence Sequence is finiteinfinite. Consider squaring 2*10^k+1 and 2*10^k+2 for k >= 1: (441, 484), (40401, 40804), (4004001, 4008004), etc.

DSM: Sequence is infinite. Consider squaring 2*10^k+1 and 2*10^k+2 for k >= 1: (441, 484), (40401, 40804), (4004001, 4008004), etc.

KEYWORD

base,more,nonn,base,new

#3 by D. S. McNeil at Sat Nov 20 03:02:21 EST 2010

DATA

1, 4, 49, 169, 225, 441, 576, 784, 1296, 2304, 5041, 7396, 8464, 9409, 12769, 17689, 18496, 21609, 23104, 26569, 30276, 32041, 34596, 36481, 40401, 45369, 53824, 55696, 62001, 69169, 71289, 77284, 116964, 121104, 123904, 148996

OFFSET

0,1,2

COMMENTS

DSM: Sequence is infinite. Consider squaring 2*10^k+1 and 2*10^k+2 for k >= 1: (441, 484), (40401, 40804), (4004001, 4008004), etc.

EXTENSIONS

Extended and edited by D. S. McNeil (mcneil(AT)hku.hk), Nov 20 2010

STATUS

approved

proposed

#2 by N. J. A. Sloane at Sat Sep 13 03:00:00 EDT 2003

COMMENTS

Conjecture: Sequence sequence is finite.

KEYWORD

base,more,nonn,new

#1 by N. J. A. Sloane at Fri May 16 03:00:00 EDT 2003

NAME

Smaller of the two successive squares which differ in the use of only one digit.

DATA

1, 4, 49, 169, 225, 441, 576, 784, 1296, 2304, 5041, 7396, 8464, 9409

OFFSET

0,2

COMMENTS

Conjecture: Sequence is finite.

EXAMPLE

1296 is a member as 1296 and 1369 differ in the use of only one digit i.e. 2 and 3.

KEYWORD

base,more,nonn

AUTHOR

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

STATUS

approved