A116180
Numbers k such that k concatenated with k+3 gives the product of two numbers which differ by 7.
Original entry on oeis.org
7137, 7767, 47783068991048776635, 48797525371338932241, 55658688122404752991, 56753136503494828605, 85555875266989354735, 86911515887391841491, 95992713077544748491, 97428345698747155255
Offset: 1
7767//7770 = 8810 * 8817, where // denotes concatenation.
7767//7762 = 8809 * 8818.
7767//7776 = 8811 * 8816.
A116338
n times n+5 gives the concatenation of two numbers m and m+7.
Original entry on oeis.org
700, 777, 791, 868, 42338, 57658, 96884, 44121667, 55878329, 85298138, 36680703009575609347721358494, 63319296990424390652278641502, 69346342454876071597336150482, 81501115172242572470460459684
Offset: 1
85298138 * 85298143 = 72757727//72757734, where // denotes
concatenation.
A116350
Numbers k such that k*(k+4) gives the concatenation of two numbers m and m+9.
Original entry on oeis.org
33, 64, 45211541, 54788456, 78317868, 72388446037855609175404258, 73247326752475247326752673, 75267524732673267524732473, 76126405447292905676080888, 42053270820132695893502981749304
Offset: 1
78317868 * 78317872 = 61336887//61336896, where // denotes concatenation.
A116352
Numbers k such that k*(k+6) gives the concatenation of two numbers m and m+9.
Original entry on oeis.org
3378, 6617, 7028, 49941474, 50058521, 97000298, 785321170881, 799019801018, 989301366861, 997000002998, 4044997109223942, 4136014586911893, 4248535260473902, 4366325506691846, 4457342984379797, 5542657015620198
Offset: 1
97000298 * 97000304 = 94090583//94090592, where // denotes concatenation.
Showing 1-4 of 4 results.
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