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.
A116125
Numbers k such that k concatenated with k-5 gives the product of two numbers which differ by 6.
Original entry on oeis.org
7, 97, 205, 300, 477, 732, 997, 1920, 3157, 9997, 52896, 99997, 120085, 427020, 999997, 8264460, 9999997, 88581312, 99999997, 112000885, 112917765, 143075580, 152863360, 193537077, 233788192, 266755221, 313680096
Offset: 1
6786111717//6786111712 = 8237785936 * 8237785942, where // denotes concatenation.
A116173
Numbers k such that k concatenated with k+2 gives the product of two numbers which differ by 6.
Original entry on oeis.org
6752089, 6448802889351008245, 18894512461523256139943105859903480218905, 31958875438439894736354375209245786214798
Offset: 1
6752089//6752091 = 8217107 * 8217113, where // denotes concatenation.
6752089//6752096 = 8217108 * 8217112.
A116257
n times n+8 gives the concatenation of two numbers m and m-5.
Original entry on oeis.org
7, 8217106, 8030443878983905980, 43467818511541680701794365325328847002050, 56532181488458319298205634674671152997943
Offset: 1
8217106 * 8217114 = 6752089//6752084, where // denotes
concatenation.
A116113
Numbers k such that k concatenated with k-7 gives the product of two numbers which differ by 8.
Original entry on oeis.org
95, 216, 287, 515, 675, 995, 1175, 4320, 9995, 82640, 99995, 960795, 999995, 1322312, 4049591, 9999995, 16955015, 34602080, 99999995, 171010235, 181964891, 183673467, 187160072, 321920055, 326530616, 328818032
Offset: 1
8533818720//8533818713 = 9237867023 * 9237867031, where // denotes concatenation.
A116139
Numbers k such that k concatenated with k-3 gives the product of two numbers which differ by 8.
Original entry on oeis.org
43, 20440836, 30017751, 61336887, 52400871197755334426147587, 53651708763838760619655612, 56652002793835820319625612, 57952296063256269823192087, 17684775866714240650923831481623
Offset: 1
61336887//61336884 = 78317866 * 78317874, where // denotes concatenation.
Showing 1-6 of 6 results.
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