Some recent uploads to arxiv.org that have caught my attention:

Lens sequences, by J. Kocik, arXiv:0710.3226. ( Read more... )

Generalizations of Schöbi's tetrahedral dissection, by Sloane and Vaishampayan, arXiv:0710.3857. ( Read more... )

Simple, linear-time modular decomposition, by Tedder, Corneil, Habib, and Paul, arxiv:0710.3901. ( Read more... )

The lonely vertex problem, by D. Frettlöh and A. Glazyrin, arxiv:0710.4870. ( Read more... )

Triangular peg solitaire unlimited, by G. I. Bell, arxiv:0711.0486. ( Read more... )

Permutations defining convex permutominoes, by Bernini, Disanto, Pinzani, and Rinaldi, arxiv:0711.0582. ( Read more... )