A116121
Numbers k such that k concatenated with k-5 gives the product of two numbers which differ by 2.
Original entry on oeis.org
65, 6653, 9605, 218413, 283720, 996005, 58446925, 99960005, 6086712229, 7385370133, 8478948853, 9999600005, 120178240093, 161171620229, 358247912200, 426843573160, 893417179213, 999996000005, 23376713203604
Offset: 1
9999600005//9999600000 = 9999800000 * 9999800002, where // denotes concatenation.
A116102
Numbers k such that k concatenated with k-8 gives the product of two numbers which differ by 2.
Original entry on oeis.org
16, 1337032, 2084503, 2953232, 4023943, 1330033613070195328, 4036108433661798551, 8283744867954114232, 6247320195351414276186411625291, 9452080202814205132771066881607
Offset: 1
4023943//4023935 = 6343455 * 6343457, where // denotes
concatenation.
A116247
n times n+2 gives the concatenation of two numbers m and m-6.
Original entry on oeis.org
45, 54, 949950, 979653, 7771781678, 7900890079, 9920892099, 9949999500, 38773083432316, 41534158410841, 47433813119407, 52566186880592, 58465841589158, 61226916567683, 72258945037434, 86156896546724
Offset: 1
A116115
Numbers k such that k concatenated with k-6 gives the product of two numbers which differ by 1.
Original entry on oeis.org
58, 1552909498221642960203840517299022287877411846, 1723404686015903064905313664707396376746205762, 2153694542826970975147295558223788704098018912
Offset: 1
58//52 = 76 * 77, where // denotes concatenation.
Original entry on oeis.org
6, 5346, 8083, 10578, 45531, 58626, 2392902, 2609443, 7272838, 51248898, 98009803, 159728062051, 360408196038, 523637103531, 770378933826, 998000998003, 1214959556998, 1434212848998, 3860012299771, 4243705560771
Offset: 1
Showing 1-5 of 5 results.
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