|
| |
|
|
A061361
|
|
a(1) = 4; a(n) = least number such that the concatenation a(n)a(n-1)...a(2)a(1) is a square.
|
|
6
| |
|
|
4, 6, 17, 604, 9612, 85848855, 109457393440691436, 16484027824615378535694780556419522, 2537811713051483817817710620248313487995814710180147690293469081793581
(list; graph; refs; listen; history; internal format)
|
|
|
|
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.
Sequence in context: A034492 A125691 A079803 * A113610 A062046 A102020
Adjacent sequences: A061358 A061359 A061360 * A061362 A061363 A061364
|
|
|
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
|
| |
|
|
