138720

Appears in sequences

• a(n) = binomial(n,3)*binomial(n-1,3)/4.at n=14A006542
• "DHK[ 7 ]" (bracelet, identity, unlabeled, 7 parts) transform of 1,1,1,1,...at n=27A032248
• Measures of entanglement in 3-qbits.at n=30A129548
• Exponential Riordan array (e^(x), x*A000108(x)).at n=62A185946
• Integer areas A of integer-sided cyclic quadrilaterals such that the length of the circumradius is a perfect square.at n=16A233315
• Number of (n+1) X (1+1) 0..2 arrays with the upper median unequal to the lower median in every 2 X 2 subblock.at n=5A236271
• Number of (n+1)X(6+1) 0..2 arrays with the upper median unequal to the lower median in every 2X2 subblock.at n=0A236276
• T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with the upper median unequal to the lower median in every 2X2 subblock.at n=15A236278
• T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with the upper median unequal to the lower median in every 2X2 subblock.at n=20A236278
• Decimal representation of the x-axis, from the left edge to the origin, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 149", based on the 5-celled von Neumann neighborhood.at n=34A279179