/usr/include/trilinos/ is in libtrilinos-amesos-dev 12.12.1-5.
This file is owned by root:root, with mode 0o755.
..
/usr/include/trilinos/Amesos.h
/usr/include/trilinos/Amesos_BaseSolver.h
/usr/include/trilinos/Amesos_ComponentBaseSolver.h
/usr/include/trilinos/Amesos_ConfigDefs.h
/usr/include/trilinos/Amesos_Control.h
/usr/include/trilinos/Amesos_Klu.h
/usr/include/trilinos/Amesos_Lapack.h
/usr/include/trilinos/Amesos_Mumps.h
/usr/include/trilinos/Amesos_NoCopiable.h
/usr/include/trilinos/Amesos_Reordering.h
/usr/include/trilinos/Amesos_Scaling.h
/usr/include/trilinos/Amesos_Status.h
/usr/include/trilinos/Amesos_Support.h
/usr/include/trilinos/Amesos_TestRowMatrix.h
/usr/include/trilinos/Amesos_Time.h
/usr/include/trilinos/Amesos_Utils.h
/usr/include/trilinos/Amesos_config.h
/usr/include/trilinos/CrsMatrixTranspose.h