A116106
Numbers k such that k concatenated with k-8 gives the product of two numbers which differ by 6.
Original entry on oeis.org
9, 13, 99, 103, 183, 328, 528, 715, 999, 1003, 6099, 9999, 10003, 13224, 40495, 99999, 100003, 106755, 453288, 999999, 1000003, 2066115, 2975208, 9999999, 10000003, 22145328, 28027683, 99999999, 100000003, 110213248, 110667555
Offset: 1
999999999//999999991 = 999999997 * 1000000003, where // denotes concatenation.
A116236
n times n+5 gives the concatenation of two numbers m and m-8.
Original entry on oeis.org
7282816, 8171726, 4550754022124826465, 5449245977875173531, 8176518705147900804, 8951999555715882882349355522887, 9861090464806791973258446431978
Offset: 1
8171726 * 8171731 = 6677714//6677706, where // denotes
concatenation.
A116238
Numbers k such that k*(k+7) gives the concatenation of two numbers m and m-8.
Original entry on oeis.org
69, 79822842, 69852478553064869297984899963804, 77473062193002372448027740546436, 77747359197583788609974143907616, 84341826458653210947638195982112, 85367942837521291760016984490248
Offset: 1
79822842 * 79822849 = 63716866//63716858, where // denotes concatenation.
A116242
Numbers k such that k*(k+6) gives the concatenation of two numbers m and m-7.
Original entry on oeis.org
8871, 9008, 83352839, 99000098, 329767122285, 670232877710, 738226276370, 933006600338, 999000000998, 3779410975143112, 3872816717528064, 4250291784692547, 4278630943941864, 4372036686326816, 4749511753491299
Offset: 1
99000098 * 99000104 = 98010199//98010192, where // denotes concatenation.
A116229
Numbers k such that k*(k+6) gives the concatenation of two numbers m and m-9.
Original entry on oeis.org
8, 98, 998, 9998, 99998, 999998, 9999998, 99999998, 999999998, 9999999998, 36363636361, 45454545452, 54545454543, 63636363634, 72727272725, 81818181816, 90909090907, 99999999998, 999999999998, 9999999999998
Offset: 1
99999998 * 100000004 = 100000001//99999992, where // denotes concatenation.
Showing 1-5 of 5 results.