OEIS

The On-Line Encyclopedia of Integer Sequences® of Neil Sloane et al.

• A Handbook of Integer Sequences (Academic Press, New York and London 1973).
• Automatic detection and correction of invalid hyperlinks in the OEIS in 2008-2009

Work on individual sequences

• A220952: 0, 1, 2, 3, 4, 9, 14, 19, 18, 17, 16, 11, 12, 13, ..., 49 ... by Don Knuth, Feb. 20, 2013 (nonn,unkn)
• FASS curves: space-filling, self-avoiding, simple and self-similar curves