const internal/sync.nChildren

3 uses

	internal/sync (current package)
		hashtriemap.go#L536: 	nChildren     = 1 << nChildrenLog2
		hashtriemap.go#L537: 	nChildrenMask = nChildren - 1
		hashtriemap.go#L546: 	children [nChildren]atomic.Pointer[node[K, V]]