154469

Appears in sequences

• Number of 3 X n binary matrices with distinct rows, up to row and column permutation; (n,3)-hypergraphs (including empty hyperedge but excluding multiple hyperedges).at n=18A055194
• Number of binary strings of length n with no substrings equal to 0000 0001 or 1111.at n=17A164416
• One of the two successive approximations up to 11^n for 11-adic integer sqrt(5). Here the 7 (mod 11) case (except for n = 0).at n=5A321077