774400

Appears in sequences

• Squares with digits in nonincreasing order.at n=22A028822
• Squares whose digits occur with an equal minimal frequency of 2.at n=6A052050
• Powerful numbers (A001694) made of nontrivial runs of identical digits.at n=2A116064
• Number of collinear triples of distinct points in Zn x Zn with no two on the same "horizontal" or "vertical" line.at n=21A146557
• a(n) = 4*a(n-1) + 4*a(n-2) for n > 1; a(0) = 1, a(1) = 14.at n=8A164540
• Number of n X 6 0..1 arrays avoiding 0 0 1 and 0 1 1 horizontally and 0 0 1 and 1 0 1 vertically.at n=9A208140
• Composite numbers whose number of proper divisors has a number of proper divisors which has a prime number of proper divisors.at n=23A223457
• a(n) = 2^(n-1)*(3^n-2^(n+1)+1).at n=8A228701
• Perfect squares k such that each decimal digit of k is equal to the difference of at least two other digits of k.at n=13A255893
• Lexicographically first sequence of positive squares, no two or more of which sum to a square.at n=15A305884
• Numerator of squared radius of circumscribed circle of a triangle with integer sides i <= j <= k, such that the number of triangles with this radius sets a new record. Denominators are A331225.at n=13A331224
• Numbers whose prime factors and prime signature have the same mean.at n=23A359904
• Perfect powers whose digits are in nonincreasing order.at n=28A385517