A080559 Duplicate of A010928.
1, 12, 66, 220, 495, 792, 924, 792, 495, 220, 66, 12, 1
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.