  Multiplicity fluctuations were investigated in Ar+Sc collisions at 13A, 19A,
30A, 40A, 75A, 150A GeV/c using the NA61/SHINE detector at the SPS. Centrality
selection is based on the nucleon-spectator energy in the forward hemisphere as
measured by the Projectile spectator detector. Preliminary results on the
scaled variance {\omega} and the strongly intensive measure {\Omega} were
obtained for the multiplicity distribution of all, negatively and positively
charged hadrons. Results are discussed and compared with p+p results and Pb+Pb
data of NA49 and EPOS 1.99 simulations.
