A116241 n times n+3 gives the concatenation of two numbers m and m-7.

73, 7248, 7933, 86896, 95987, 7450774, 8912861, 3546363535354546353, 4635454646463635463, 5364545353536364535, 6453636464645453645, 31993591495513432827263, 39229430087220380122375

Offset

1,1

Links

Table of n, a(n) for n=1..13.

Example

8912861 * 8912864 = 7943911//7943904, where // denotes
concatenation.

Crossrefs

Cf. A116110, A116234, A116242, A116253.

Sequence in context: A292013 A192765 A177094 * A105322 A176987 A174747

Adjacent sequences: A116238 A116239 A116240 * A116242 A116243 A116244

Keyword

nonn,base

Author

Giovanni Resta, Feb 06 2006

Status

approved