A116187
Numbers k such that k concatenated with k+4 gives the product of two numbers which differ by 6.
Original entry on oeis.org
12, 43, 20440836, 30017751, 61336887, 52400871197755334426147587, 53651708763838760619655612, 56652002793835820319625612, 57952296063256269823192087, 17684775866714240650923831481623
Offset: 1
61336887//61336891 = 78317867 * 78317873, where // denotes concatenation. 61336887//61336896 = 78317868 * 78317872.
A116304
Numbers k such that k*(k+6) gives the concatenation of two numbers m and m+2.
Original entry on oeis.org
8217107, 8030443878983905981, 43467818511541680701794365325328847002051, 56532181488458319298205634674671152997944
Offset: 1
8217107 * 8217113 = 6752089//6752091, where // denotes concatenation.
A116317
Numbers k such that k*(k+4) gives the concatenation of two numbers m and m+4.
Original entry on oeis.org
7745, 8019, 33294316, 66705681, 98000199, 340465755423, 476452552743, 523547447254, 659534244574, 866013200679, 998000001999, 3695104677080132, 3755782995538766, 4198081170077529, 4803478892324964, 5196521107675033
Offset: 1
98000199 * 98000203 = 96040393//96040397, where // denotes concatenation.
A116319
n times n+7 gives the concatenation of two numbers m and m+4.
Original entry on oeis.org
77, 4328, 5666, 9365, 41505566065992219342, 44035313091289689595, 46429818586950933764, 48959565612248404017, 51040434387751595977, 53570181413049066230, 55964686908710310399, 58494433934007780652
Offset: 1
9365 * 9372 = 8776//8780, where // denotes concatenation.
A116325
n times n+6 gives the concatenation of two numbers m and m+5.
Original entry on oeis.org
2, 3, 29, 66, 739, 893, 755004, 789546, 3643103, 6356892, 9084165, 405460897734702723, 416974886220714237, 583025113779285758, 594539102265297272, 920312382883217575, 931826371369229089
Offset: 1
9084165 * 9084171 = 8252210//8252215, where // denotes
concatenation.
Showing 1-5 of 5 results.
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