A116205
Numbers k such that k concatenated with k+7 gives the product of two numbers which differ by 3.
Original entry on oeis.org
1, 81, 1353, 3997, 7723, 23761, 26271, 76771, 1415683, 3890571, 8495497, 1066870443, 1239366513, 4198438981, 4534273891, 6502317141, 6918679731, 2199164200036329043, 2820114781174460091, 5500888421709400741
Offset: 1
A116343
Numbers k such that k*(k+1) gives the concatenation of two numbers m and m+8.
Original entry on oeis.org
14, 86, 76983, 714690, 952314, 90438191, 96320544, 32980078899029, 34346653774238, 42816188292273, 42881990066488, 57118009933512, 57183811707727, 65653346225762, 67019921100971, 81321742742210
Offset: 1
96320544 * 96320545 = 92776472//92776480, where // denotes concatenation.
A116349
Numbers k such that k*(k+3) gives the concatenation of two numbers m and m+9.
Original entry on oeis.org
32, 66, 42755, 57243, 75425, 425074, 574924, 979530, 4301395, 5698603, 7028668, 4925000749, 5074999249, 7748266576, 8511881486, 8814851186, 7059602159674, 7106167933830, 7439286611623, 7485852385779, 46791112884927
Offset: 1
Showing 1-3 of 3 results.
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