/usr/include/seqan/seeds/ is in libseqan2-dev 2.3.2+dfsg2-4ubuntu2.
This file is owned by root:root, with mode 0o755.
..
/usr/include/seqan/seeds/banded_chain_alignment.h
/usr/include/seqan/seeds/banded_chain_alignment_impl.h
/usr/include/seqan/seeds/banded_chain_alignment_profile.h
/usr/include/seqan/seeds/banded_chain_alignment_scout.h
/usr/include/seqan/seeds/banded_chain_alignment_traceback.h
/usr/include/seqan/seeds/basic_iter_indirect.h
/usr/include/seqan/seeds/seeds_base.h
/usr/include/seqan/seeds/seeds_combination.h
/usr/include/seqan/seeds/seeds_extension.h
/usr/include/seqan/seeds/seeds_global_chaining.h
/usr/include/seqan/seeds/seeds_global_chaining_base.h
/usr/include/seqan/seeds/seeds_global_chaining_gusfield.h
/usr/include/seqan/seeds/seeds_seed_base.h
/usr/include/seqan/seeds/seeds_seed_chained.h
/usr/include/seqan/seeds/seeds_seed_diagonal.h
/usr/include/seqan/seeds/seeds_seed_set_base.h
/usr/include/seqan/seeds/seeds_seed_set_non_scored.h
/usr/include/seqan/seeds/seeds_seed_set_scored.h
/usr/include/seqan/seeds/seeds_seed_set_unordered.h
/usr/include/seqan/seeds/seeds_seed_simple.h