Concentration accompanied by equanimity (Buddhism) [2]

Here there is unification of the mind in the jhana not associated with concentration with bliss, one in both the fourfold reckoning and the fivefold reckoning. This is one way of experiencing access concentration.

According to Hinayana Buddhism, concentration is considered as of one kind (monad), of two kinds (dyads), of three kinds (triads), of four kinds (tetrads) or of five kinds (pentad). In the fourth dyad, this is contrasted with concentration accompanied by bliss.