A077270 Duplicate of A076048.
1, 4, 11, 26, 52, 109, 237, 556, 1405, 3690, 10085, 28157, 80071, 230568, 670122
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.