A116230 n times n+7 gives the concatenation of two numbers m and m-9.

80, 77394226, 89158932, 36623663376237623663376334, 37633762366336633762366234, 62366237633663366237633760, 63376336623762376336623660, 86194223018927804587702127

Offset

1,1

Links

Table of n, a(n) for n=1..8.

Example

89158932 * 89158939 = 79493157//79493148, where // denotes
concatenation.

Crossrefs

Cf. A116099, A116229, A116231, A116238.

Sequence in context: A051184 A159444 A208187 * A056669 A005085 A050455

Adjacent sequences: A116227 A116228 A116229 * A116231 A116232 A116233

Keyword

nonn,base

Author

Giovanni Resta, Feb 06 2006

Status

approved