A116193
Numbers k such that k concatenated with k+5 gives the product of two numbers which differ by 5.
Original entry on oeis.org
11, 45, 18281, 32769, 56891, 180689, 330539, 959481, 1850201, 3247409, 4940219, 2425563239, 2575561739, 6003563495, 7245212645, 7770160145, 4983798265289, 5049762270381, 5534298528989, 5603798594169, 21894082450101
Offset: 1
7770160145//7770160136 = 8814851183 * 8814851192, where // denotes concatenation.
A116336
n times n+3 gives the concatenation of two numbers m and m+7.
Original entry on oeis.org
3, 89, 3677, 6321, 8787, 48744, 51254, 87618, 3762555, 6237443, 9217101, 3266298275, 3520463765, 6479536233, 6733701723, 8063694649, 8317860139, 4689524709430934475, 5310475290569065523, 7416797436703661748
Offset: 1
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.
A116348
Numbers k such that k*(k+1) gives the concatenation of two numbers m and m+9.
Original entry on oeis.org
10, 90, 3678, 6322, 8788, 48745, 51255, 87619, 3762556, 6237444, 9217102, 3266298276, 3520463766, 6479536234, 6733701724, 8063694650, 8317860140, 4689524709430934476, 5310475290569065524, 7416797436703661749
Offset: 1
Showing 1-4 of 4 results.
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