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.
A116128
Numbers k such that k concatenated with k-4 gives the product of two numbers which differ by 3.
Original entry on oeis.org
5303944, 6677714, 2070936216988528558, 2969428172738875624, 6685545813563350444, 8013829604553736451395958429212, 9724110515510343256451213152382
Offset: 1
A116253
n times n+3 gives the concatenation of two numbers m and m-5.
Original entry on oeis.org
96012, 3812029082958589067221817215313, 6187970917041410932778182784685, 3189731673290266386838927279556315881
Offset: 1
96012 * 96015 = 92185//92180, where // denotes concatenation.
A116110
Numbers k such that k concatenated with k-7 gives the product of two numbers which differ by 3.
Original entry on oeis.org
55, 5255, 6295, 75511, 92137, 5551405, 7943911, 1257669432489239675, 2148743977942130765, 2877834685014859837, 4164942361780146967, 10235898967817894552965, 15389481849681116007757
Offset: 1
Showing 1-4 of 4 results.
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