A116120
Numbers k such that k concatenated with k-5 gives the product of two numbers which differ by 1.
Original entry on oeis.org
7, 55, 5255, 6295, 75511, 92137, 5551405, 7943911, 1257669432489239675, 2148743977942130765, 2877834685014859837, 4164942361780146967, 10235898967817894552965, 15389481849681116007757
Offset: 1
A116265
n times n+1 gives the concatenation of two numbers m and m-3.
Original entry on oeis.org
96013, 3812029082958589067221817215314, 6187970917041410932778182784686, 3189731673290266386838927279556315882
Offset: 1
96013 * 96014 = 92185//92182, where // denotes concatenation.
A116141
Numbers k such that k concatenated with k-2 gives the product of two numbers which differ by 1.
Original entry on oeis.org
4, 5303944, 6677714, 2070936216988528558, 2969428172738875624, 6685545813563350444, 8013829604553736451395958429212, 9724110515510343256451213152382
Offset: 1
6677714//6677712 = 8171728 * 8171729, 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 1-4 of 4 results.