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A340925 16*a(n) is the maximum possible determinant of a 5 X 5 matrix whose entries are 25 consecutive primes starting with prime(n). 3

%I #8 Jan 28 2021 04:09:54

%S 445934520,527275650,606375810,668638620,732258072,860414368,

%T 995563032,1132837302,1249798972,1453587865,1598993079,1789976248,

%U 2008319824,2181193410,2363922414,2592209412,2782039915,3035727819,3255326094,3421333460,3453338250,3663999760,4056944944

%N 16*a(n) is the maximum possible determinant of a 5 X 5 matrix whose entries are 25 consecutive primes starting with prime(n).

%C The entries of the matrix are arranged in such a way that the determinant of the matrix is maximized.

%C The special case of the first matrix with determinant A180128(5) = 5725998504 is excluded, since the prime number 2 prevents the otherwise existing divisibility of the determinant by 16.

%e a(2) = 445934520: determinant(

%e [73 53 3 79 23]

%e [37 101 43 5 47]

%e [19 41 89 71 13]

%e [11 31 29 61 97]

%e [83 7 67 17 59]) = 7134952320 = 16*445934520.

%Y Cf. A118815, A180128, A340923, A340924.

%K nonn

%O 2,1

%A _Hugo Pfoertner_, Jan 26 2021

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Last modified April 24 18:17 EDT 2024. Contains 371962 sequences. (Running on oeis4.)