48032

Appears in sequences

• Number of n X n matrices with entries 0 and 1 and no 2 X 2 submatrix of form [ 1 1; 1 0 ].at n=5A014235
• a(n) = floor(C(n+8,8)/C(n+2,2)).at n=26A084631
• Number of partitions of n in which the largest summand has frequency 1, the next largest summand has frequency at most 2, the third largest has frequency at most 3, etc.at n=47A244395
• Number of (n+2)X(3+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 or 00000101.at n=13A259767
• Rectangular array T(n,m), read by upward antidiagonals: T(n,m) is the number of difunctional (regular) binary relations between an n-element set and an m-element set.at n=40A265417
• Numbers k such that (68*10^k + 7)/3 is prime.at n=32A270613
• Expansion of g.f. A(x) satisfying A(x) = A(x^3 + x^4) / A(x^2).at n=43A372529
• Numbers k such that sopfr(k + sopfr(k)) = sopfr(k) + sopfr(sopfr(k)), where sopfr = A001414.at n=46A376851
• Number of rational polygons of denominator at most n having exactly one lattice point in their interior and primitive vertices, up to equivalence.at n=2A379894