|
Search: id:A061361
|
|
|
| A061361 |
|
a(1) = 4; a(n) = least number such that the concatenation a(n)a(n-1)...a(2)a(1) is a square. |
|
+0
7
|
|
| 4, 6, 17, 604, 9612, 85848855, 109457393440691436, 16484027824615378535694780556419522, 2537811713051483817817710620248313487995814710180147690293469081793581
(list; graph; listen)
|
|
|
OFFSET
|
1,1
|
|
|
EXAMPLE
|
a(3)a(2)a(1) = 1764 = 42^2, a(4)a(3)a(2)a(1) = 6041764 = 2458^2, a(5)a(4)a(3)a(2)a(1) = 8584885596126041764 = 2929997542^2.
|
|
CROSSREFS
|
Cf. A050636, A050637, A061359, A061363.
Adjacent sequences: A061358 A061359 A061360 this_sequence A061362 A061363 A061364
Sequence in context: A034492 A125691 A079803 this_sequence A113610 A062046 A102020
|
|
KEYWORD
|
nonn,base
|
|
AUTHOR
|
Amarnath_murthy (amarnath_murthy(AT)yahoo.com), Apr 28 2001
|
|
EXTENSIONS
|
Corrected by Larry Reeves (larryr(AT)acm.org), May 07 2001
More terms from UlrSchimke(AT)aol.com, Nov 06, 2001
|
|
|
Search completed in 0.002 seconds
|
