A116266 n times n+2 gives the concatenation of two numbers m and m-3.

7, 7311, 8990, 32523, 67476, 76567, 4891729, 5108270, 8528093, 71588335, 98999900, 399659933006, 600340066993, 723627738226, 877712329767, 998999999000, 3485626998113, 3787100274613, 6212899725386, 6514373001886

Offset

1,1

Links

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

Example

98999900 * 98999902 = 98009803//98009800, where // denotes
concatenation.

Crossrefs

Cf. A115431, A116252, A116265, A116267, A116273.

Sequence in context: A221628 A220879 A119528 * A179812 A023344 A297050

Adjacent sequences: A116263 A116264 A116265 * A116267 A116268 A116269

Keyword

nonn,base

Author

Giovanni Resta, Feb 06 2006

Status

approved