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A118937 Sub-Kaprekar numbers (1): n such that n=q-r and n^2=q*10^m+r, for some m>=1, q>=0, 0<=r<10^m, with n not a power of 10. 4
11, 101, 1001, 1078, 1287, 1364, 10001, 11096, 100001, 118183, 1000001, 1336634, 10000001, 12727274, 100000001, 123529412, 1000000001, 1019138757, 1025974026, 1097744361, 1120879122, 1140017878, 1165991904, 1237762239, 1288553552 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..25.

EXAMPLE

1287^2 = 1656369 and 1656-369 = 1287.

A larger example: 1594563333^2 = 2542632222948068889 and

2542632222-948068889=1594563333.

CROSSREFS

Cf. A006886, A118936, A118938.

Sequence in context: A289850 A171750 A191420 * A031997 A056810 A116098

Adjacent sequences:  A118934 A118935 A118936 * A118938 A118939 A118940

KEYWORD

base,nonn

AUTHOR

Giovanni Resta, May 06 2006

STATUS

approved

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Last modified April 3 14:34 EDT 2020. Contains 333197 sequences. (Running on oeis4.)