A116248 n times n+4 gives the concatenation of two numbers m and m-6.

7310, 8989, 32522, 67475, 76566, 4891728, 5108269, 8528092, 71588334, 98999899, 399659933005, 600340066992, 723627738225, 877712329766, 998999998999, 3485626998112, 3787100274612, 6212899725385, 6514373001885

Offset

1,1

Links

Table of n, a(n) for n=1..19.

Example

98999899 * 98999903 = 98009803//98009797, where // denotes
concatenation.

Crossrefs

Cf. A115431, A116235, A116247, A116249, A116254.

Sequence in context: A250638 A206080 A253939 * A140078 A321504 A318896

Adjacent sequences: A116245 A116246 A116247 * A116249 A116250 A116251

Keyword

nonn,base

Author

Giovanni Resta, Feb 06 2006

Status

approved