A118938 Sub-Kaprekar numbers (2): n such that n=r-q and n^2=q*10^m+r, for some m>=1, q>=0, 0<=r<10^m, with n not a power of 10.

78, 287, 364, 1096, 18183, 336634, 2727274, 19138757, 23529412, 25974026, 97744361, 120879122, 140017878, 165991904, 237762239, 288553552, 307692308, 333666334, 405436669, 428571430, 440553516, 447710186, 454545455, 473684212

Offset

1,1

Links

Hans Havermann, Table of n, a(n) for n = 1..1000

Hans Havermann, A large number of terms pairing them with the their A118937 partners.

Example

287^2 = 82369 and 369-82 = 287.
A larger example is 1980198021^2 = 3921184202372316441, and 2372316441-392118420 = 1980198021.

Crossrefs

Cf. A006886, A118936, A118937, A228381.

Sequence in context: A232386 A257484 A068130 * A362546 A206004 A317412

Adjacent sequences: A118935 A118936 A118937 * A118939 A118940 A118941

Keyword

base,nonn

Author

Giovanni Resta, May 06 2006

Status

approved