A116099
Numbers k such that k concatenated with k-9 gives the product of two numbers which differ by 7.
Original entry on oeis.org
69, 59898667, 79493157, 13412927190959690154913903, 14163000698458955079906403, 38895475965785687555173929, 40165600438484442828161229, 74294440818366638194239027
Offset: 1
79493157//79493154 = 89158933 * 89158938, where // denotes concatenation.
79493157//79493158 = 89158934 * 89158937.
79493157//79493160 = 89158935 * 89158936.
79493157//79493148 = 89158932 * 89158939.
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.
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.
A116231
Numbers k such that k*(k+9) gives the concatenation of two numbers m and m-9.
Original entry on oeis.org
7, 63, 42752, 57240, 75422, 425071, 574921, 979527, 4301392, 5698600, 7028665, 4925000746, 5074999246, 7748266573, 8511881483, 8814851183, 7059602159671, 7106167933827, 7439286611620, 7485852385776, 46791112884924
Offset: 1
Showing 1-4 of 4 results.
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