Set of seats with chairs in a staggered arrangement

A set comprising a plurality of seats arranged in a row along a longitudinal axis X, each seat comprising a chair and comprising a lateral pedestal arranged laterally on one side of the said chair, in which set all the chairs are oriented with a front side of each chair oriented in one and the same direction, in which set the chairs on the one hand and the lateral pedestals on the other are arranged in a staggered configuration in two rows which are parallel and parallel to the longitudinal axis X of the set of seats, each seat comprising a shell covering the said seat and determining a rear surface in a rear zone of the chair of the said seat and determining a front surface in a front zone of the lateral pedestal of the said seat, a space between a rear surface of a front seat and a front surface of a rear seat, situated immediately behind the said front seat in the set, forming a passage for an occupant of said rear seat, wherein, in a cross section formed in a vertical plane in which a minimum width Lmin of the passage is situated, each of the rear surface and the front surface have convex profiles facing one another, a width L(hz) of the said passage in the said vertical plane increasing continuously in the direction of decreasing heights hz above a reference cabin floor from a height hzmin of minimum width Lmin, at least down to near the floor, and the said width L(Hz) increasing continuously in the direction of increasing heights hz from the height hzmin of minimum width Lmin.