A116216
Numbers k such that k concatenated with k+8 gives the product of two numbers which differ by 9.
Original entry on oeis.org
122, 424, 694, 778, 878, 11012, 17872, 33322, 44644, 100127651905364, 102071005406644, 107985753493528, 110694523108262, 115328750502614, 120698923758154, 126650002778762, 137336087431654, 147311014912628
Offset: 1
44644//44652 = 66812 * 66821, where // denotes concatenation.
A116223
Numbers k such that k concatenated with k+9 gives the product of two numbers which differ by 8.
Original entry on oeis.org
136, 399, 600, 744, 8184, 66951, 134199, 401536, 5289264, 12456744, 41868519, 113342199, 115655064, 142598664, 160143051, 206611575, 227626176, 273422475, 297520656, 359785504, 387353899, 435493131, 440015536
Offset: 1
A116355
n times n+9 gives the concatenation of two numbers m and m+9.
Original entry on oeis.org
44, 48, 32182682, 32523192, 67476800, 67817310, 35810391829060641485878662, 41417330943216586236893607, 58582669056783413763106385, 64189608170939358514121330, 87098712900990098712901285
Offset: 1
67817310 * 67817319 = 45991881//45991890, where // denotes concatenation.
Showing 1-3 of 3 results.