A115440 Numbers whose square is the concatenation of two numbers k and k+8.

7747, 8021, 33294318, 66705683, 98000201, 340465755425, 476452552745, 523547447256, 659534244576, 866013200681, 998000002001, 3695104677080134, 3755782995538768, 4198081170077531, 4803478892324966, 5196521107675035

Offset

1,1

Links

Table of n, a(n) for n=1..16.

Example

6001_6009 = 7747^2.

Crossrefs

Cf. A030467, A106497, A115429, A115427, A115438, A115439, A115441, A115442, A115443, A115444, A115445, A115446, A115447.

Sequence in context: A116317 A031586 A116335 * A321037 A031646 A252556

Adjacent sequences: A115437 A115438 A115439 * A115441 A115442 A115443

Keyword

base,nonn

Author

Giovanni Resta, Jan 24 2006

Status

approved