47732

Appears in sequences

• Number of ways to place 4 nonattacking queens on a 4 X n board.at n=19A061990
• Numbers k such that k and k^2 use only the digits 2, 3, 4, 7 and 8.at n=11A137074
• G.f.: 1/(1-2*x+2*x^2-x^3+x^4).at n=44A199802
• Trisection 2 of A199802.at n=14A199929
• Number of arrays of n+2 integers in -3..3 with sum zero and adjacent elements differing in absolute value.at n=5A202957
• T(n,k)=Number of arrays of n+2 integers in -k..k with sum zero and adjacent elements differing in absolute value.at n=33A202962
• Number of arrays of 8 integers in -n..n with sum zero and adjacent elements differing in absolute value.at n=2A202968
• Number of (n+1)X(2+1) 0..6 arrays with every 2X2 subblock having the sum of the squares of the edge differences equal to 30, and no two adjacent values equal.at n=3A233886
• Number of (n+1)X(4+1) 0..6 arrays with every 2X2 subblock having the sum of the squares of the edge differences equal to 30, and no two adjacent values equal.at n=1A233888
• T(n,k)=Number of (n+1)X(k+1) 0..6 arrays with every 2X2 subblock having the sum of the squares of the edge differences equal to 30 (30 maximizes T(1,1)), and no two adjacent values equal.at n=11A233892
• T(n,k)=Number of (n+1)X(k+1) 0..6 arrays with every 2X2 subblock having the sum of the squares of the edge differences equal to 30 (30 maximizes T(1,1)), and no two adjacent values equal.at n=13A233892
• Number of overpal-free binary words of length n.at n=38A277277
• Numbers k such that (202*10^k - 13)/9 is prime.at n=18A295826
• a(n) is the number of Q-bases which can be built from the set {log(1),...,log(n)}.at n=34A307984