A116189
Numbers k such that k concatenated with k+4 gives the product of two numbers which differ by 8.
Original entry on oeis.org
4, 80, 10736, 45205, 58256, 481580, 810181, 5321861, 8223821, 1342750076, 4014039205, 6425372269, 7089305869, 9801001981, 1057798964204, 4553034666541, 5261853984181, 8977355147344, 9962308611856
Offset: 1
A116182
Numbers k such that k concatenated with k+3 gives the product of two numbers which differ by 9.
Original entry on oeis.org
3, 14879, 37733, 78677, 1358679, 3986627, 5217267, 71097587, 96105783, 119085207401333056054787, 163143914551633969404033, 355322363584753736584499, 428910715257982234999959
Offset: 1
96105783//96105786 = 98033553 * 98033562, where // denotes
concatenation.
A116197
Numbers k such that k concatenated with k+5 gives the product of two numbers which differ by 9.
Original entry on oeis.org
25, 2448207281, 2552334847, 9492271895, 10713024775597019390267617, 45251510049471045364918031, 99414584492459886818648287, 1000584180267191789271991959007645
Offset: 1
A116321
n times n+9 gives the concatenation of two numbers m and m+4.
Original entry on oeis.org
36, 56, 35161, 64831, 80616, 3987149564, 4383189168, 5616810824, 6012850428, 7706615964, 8102655568, 4345867705884192320, 4745041385024898581, 5254958614975101411, 5654132294115807672, 79423444003688998051750982
Offset: 1
Showing 1-4 of 4 results.