A115435 Numbers k such that the concatenation of k with k-8 gives a square.

2137, 2892, 6369, 12217, 21964, 28233, 42312, 4978977, 9571608, 18642249, 32288908, 96039609, 200037461217, 305526508312, 570666416233, 638912248204, 996003996009, 1846991026584, 3251664327537, 4859838227992

Offset

1,1

Links

Table of n, a(n) for n=1..20.

Example

18642249_18642241 = 43176671^2.

Crossrefs

Cf. A030465, A102567, A115426, A115437, A115428, A115429, A115430, A115431, A115432, A115433, A115434, A115436, A115446.

Sequence in context: A233216 A319008 A020398 * A116095 A347040 A252547

Adjacent sequences: A115432 A115433 A115434 * A115436 A115437 A115438

Keyword

base,nonn

Author

Giovanni Resta, Jan 25 2006

Status

approved