71844
domain: N
Appears in sequences
- Number of 7 X 7 binary matrices with n ones, with no zero rows or columns, up to row and column permutation.at n=28A056079
- Symmetric secondary structures of RNA molecules with n nucleotides.at n=27A088518
- Number of left factors of peakless Motzkin paths of length n.at n=13A091964
- Number of meanders of length n with Dyck-steps avoiding the consecutive steps UDU and DUD.at n=27A329703