A116243 n times n+7 gives the concatenation of two numbers m and m-7.

38, 56, 32262230, 67737764, 79321054, 3341093417798787499091, 3861488851737861033959, 4747922651210186579785, 5252077348789813420209, 6138511148262138966035, 6658906582201212500903, 7232275368591793618229

Offset

1,1

Links

Table of n, a(n) for n=1..12.

Example

79321054 * 79321061 = 62918301//62918294, where // denotes
concatenation.

Crossrefs

Cf. A116112, A116238, A116242, A116244, A116250.

Sequence in context: A341172 A077801 A078544 * A098126 A244313 A147616

Adjacent sequences: A116240 A116241 A116242 * A116244 A116245 A116246

Keyword

nonn,base

Author

Giovanni Resta, Feb 06 2006

Status

approved