A115427 Numbers k such that k^2 is the concatenation of two numbers m and m+2.

8874, 9011, 83352842, 99000101, 329767122288, 670232877713, 738226276373, 933006600341, 999000001001, 3779410975143115, 3872816717528067, 4250291784692550, 4278630943941867, 4372036686326819, 4749511753491302

Offset

1,1

Links

Table of n, a(n) for n=1..15.

Example

9011^2 = 8119_8121.

Crossrefs

Cf. A030467, A106497, A115426, A115438, A115439, A115440, A115441, A115442, A115443, A115444, A115445, A115446, A115447.

Sequence in context: A116242 A116275 A116295 * A236614 A209712 A282059

Adjacent sequences: A115424 A115425 A115426 * A115428 A115429 A115430

Keyword

base,nonn

Author

Giovanni Resta, Jan 24 2006

Status

approved