A116152 Numbers k such that k concatenated with k-1 gives the product of two numbers which differ by 7.

9, 11, 45, 18281, 32769, 56891, 180689, 330539, 959481, 1850201, 3247409, 4940219, 2425563239, 2575561739, 6003563495, 7245212645, 7770160145, 4983798265289, 5049762270381, 5534298528989, 5603798594169

Offset

1,1

Links

Table of n, a(n) for n=1..21.

Crossrefs

Cf. A116205, A115429, A116153, A116160, A116283.

Sequence in context: A201999 A195309 A242507 * A215831 A195941 A195992

Adjacent sequences: A116149 A116150 A116151 * A116153 A116154 A116155

Keyword

nonn,base

Author

Giovanni Resta, Feb 06 2006

Status

approved