Volume :3 , Issue :2 ,Page :85-92

Abstract :Graham and Sloane introduced the harmonious graphs and Singh & Varkey introduced the odd sequential graphs. Gayathri et al introduced even sequential harmonious labeling of graphs. In this paper, we investigate even seGraham and Sloane introduced the harmonious graphs and Singh & Varkey introduced the odd sequential graphs. Gayathri et al introduced even sequential harmonious labeling of graphs. In this paper, we investigate even se quential harmonious labeling of some tree related graphs. quential harmonious labeling of some tree related graphs.