A116326 Numbers k such that k*(k+7) gives the concatenation of two numbers m and m+5.

8601, 9423, 35441, 64553, 73644, 4851412, 5148582, 8784946, 726216462985, 753613723259, 791909893642, 819307153916, 3654754464602947513, 4527063717215234299, 5472936282784765695, 6345245535397052481

Offset

1,1

Links

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

Example

8784946 * 8784953 = 7717533//7717538, where // denotes concatenation.

Crossrefs

Cf. A116195, A116319, A116325, A116327, A116332.

Sequence in context: A221053 A370972 A370970 * A031809 A252471 A250589

Adjacent sequences: A116323 A116324 A116325 * A116327 A116328 A116329

Keyword

nonn,base

Author

Giovanni Resta, Feb 06 2006

Status

approved