A097846 Differences between A097598 and A045918.
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -99, 0, 99, 198, 297, 396, 495, 594, 693, 792, -198, -99, 0, 99, 198, 297, 396, 495, 594, 693, -297
Offset: 0
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.