41222

Appears in sequences

• Number of strong restricted edge-subgraphs in Moebius ladder M_n.at n=5A020881
• a(n) is the smallest semiprime such that difference between a(n) and next semiprime, b(n), is n.at n=30A131109
• a(n) = least member of A006881 whose difference from the following one equals n, or 0 if no such semiprime exists.at n=30A140784
• Number of 4 X n 0..1 arrays with diagonals and antidiagonals unimodal and rows nondecreasing.at n=17A223951
• Number of nX4 (-1,0,1) arrays of determinants of 2X2 subblocks of some (n+1)X5 binary array with rows and columns of the latter in lexicographically nondecreasing order.at n=4A226868
• Number of n X 5 (-1,0,1) arrays of determinants of 2 X 2 subblocks of some (n+1) X 6 binary array with rows and columns of the latter in lexicographically nondecreasing order.at n=3A226869
• T(n,k)=Number of nXk (-1,0,1) arrays of determinants of 2X2 subblocks of some (n+1)X(k+1) binary array with rows and columns of the latter in lexicographically nondecreasing order.at n=31A226870
• T(n,k)=Number of nXk (-1,0,1) arrays of determinants of 2X2 subblocks of some (n+1)X(k+1) binary array with rows and columns of the latter in lexicographically nondecreasing order.at n=32A226870
• G.f.: Product_{k>=1, j>=1} 1/(1 - x^(j*k^3)).at n=39A280661
• Lexicographically earliest sequence of distinct positive integers with no finite subset summing to a factorial number (A000142).at n=39A353969