1982464

Appears in sequences

• Squares of even octagonal numbers.at n=11A014794
• Determinant of the n X n matrix whose element (i,j) equals |i-j| (mod 4).at n=14A071769
• Numbers k such that Sum_{i=1..k} gcd(k,i) divides Sum_{i=1..k} lcm(k,i).at n=24A072109
• a(n) = 0^n/2 + 2^n*(n^2+n+2)/4.at n=15A087431
• a(n) = (2*n-8)^2 * 2^(n-3).at n=15A135466
• Number of (n+1) X (n+1) 0..1 arrays with the number of clockwise edge increases in every 2 X 2 subblock differing from each horizontal or vertical neighbor.at n=14A205186
• Number of n X n 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 1 and 1 0 1 vertically.at n=7A207595
• Number of nX5 0..1 arrays avoiding 0 0 0 and 1 0 1 horizontally and 0 0 1 and 0 1 1 vertically.at n=13A208010
• Number of n X 5 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 0 1 and 0 1 1 vertically.at n=13A208552
• a(n+6) = 6*a(n+4) - 12*a(n+2) + 8*a(n), a(0)..a(5) = 8,0,9,0,8,0.at n=30A243456
• Heinz numbers of integer partitions whose product of parts is one greater than their sum.at n=33A325041
• a(n) is the smallest nonnegative integer k where exactly n pairs of positive integers (x, y) exist such that x^2 + 7*y^2 = k.at n=19A374159
• Numbers k = p1^e1*p2^e2, with e1 != e2, such that the Euclidean distance between points (p1, e1) and (p2, e2) is an integer.at n=27A387172