A116112
Numbers k such that k concatenated with k-7 gives the product of two numbers which differ by 7.
Original entry on oeis.org
17, 35, 10408517, 45884051, 62918301, 1116290522645838319925, 1491109615209578451401, 2254276950187476704727, 2758431647767103545151, 3768131911733856383477, 4434103687048263321737, 5230580700713956424051
Offset: 1
62918301//62918300 = 79321055 * 79321060, where // denotes concatenation.
62918301//62918304 = 79321056 * 79321059.
62918301//62918306 = 79321057 * 79321058.
A116302
Numbers k such that k*(k+3) gives the concatenation of two numbers m and m+2.
Original entry on oeis.org
27, 71, 79822844, 69852478553064869297984899963806, 77473062193002372448027740546438, 77747359197583788609974143907618, 84341826458653210947638195982114, 85367942837521291760016984490250
Offset: 1
79822844 * 79822847 = 63716866//63716868, where // denotes concatenation.
A116308
Numbers k such that k*(k+2) is the concatenation of two numbers m and m+3.
Original entry on oeis.org
452, 547, 690, 855, 4381, 5618, 72729, 346532, 653467, 9090907, 94117645, 334665332, 336032386, 378253327, 390977441, 439928490, 483516485, 516483514, 560071509, 609022558, 621746672, 663967613, 665334667
Offset: 1
A116310
n times n+5 gives the concatenation of two numbers m and m+3.
Original entry on oeis.org
2, 4, 88, 3676, 6320, 8786, 48743, 51253, 87617, 3762554, 6237442, 9217100, 3266298274, 3520463764, 6479536232, 6733701722, 8063694648, 8317860138, 4689524709430934474, 5310475290569065522, 7416797436703661747
Offset: 1
A116316
Numbers k such that k*(k+3) gives the concatenation of two numbers m and m+4.
Original entry on oeis.org
386, 430, 568, 612, 815, 4522, 5476, 90911, 316833, 683165, 3636365, 6363633, 82352943, 331668333, 368421054, 395604392, 442767755, 461538463, 488721801, 511278197, 538461535, 557232243, 604395606, 631578944, 668331665
Offset: 1
Showing 1-5 of 5 results.
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