TY - JOUR AU - Callan, David TI - A combinatorial proof of Sun's “curious” identity. JO - Integers PY - 2004 PB - Walter de Gruyter VL - 4 SP - Paper A05, 6 p., electronic only EP - Paper A05, 6 p., electronic only LA - eng KW - involution; weight; domino UR - http://eudml.org/doc/124146 ER -