Yōga Sūtra 1.46

tā ēva savījaḥ samādhiḥ।

All the above equilibrium states are with seed (sabeeja-samadi).

All the samādhi described till now (savitarka, nirvitarka, savichāra, nirvichāra) are with seed as they are supported by a topic. The topic or seed is understood with right logic (savitarka), or without the need for logic (nirvitarka), with the need to enquire (savichāra), or without the need to enquire (nirvichāra).