74849

Appears in sequences

• Least of five consecutive numbers which are cubefree and not squarefree, i.e., {k, k+1, k+2, k+3, k+4} are in A067259.at n=1A071124
• Numbers k such that the concatenation of k with 4*k gives a square.at n=12A115535
• Sum of all matrix elements of n X n matrix M[i,j] = (-1)^(i+j)*Fibonacci[i+j-1].at n=13A119997
• a(n) = A175369(n^2).at n=30A175370
• 4*(n + 7)^3 - 27*(n + 7)^2 = (4*n +1)*(n+7)^2.at n=22A245033
• a(n) = 4*prime(n)^3 - 27*prime(n)^2 = (prime(n)^2)*[4*prime(n) - 27], n >= 4.at n=6A245036
• a(n) = Sum_{i=1..n-1}(i^(n-2)) mod n^4.at n=28A284760
• a(n) is the smallest number k such that factorizations of n consecutive integers starting at k have the same excess of number of primes counted with multiplicity over number of primes counted without multiplicity (A046660).at n=4A323253