A116152 - OEIS

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A116152

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

5

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

(list; graph; refs; listen; history; text; internal format)

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