A116278 n times n+9 gives the concatenation of two numbers m and m-2.
7040, 487249777145, 512750222847, 684330069116
Offset: 1
Examples
7040 * 7049 = 4962//4960, where // denotes concatenation.
This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
7040 * 7049 = 4962//4960, where // denotes concatenation.