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A053304 Number of 7 X 7 binary matrices with n=0..49 ones up to row and column permutations. 8

%I #11 Nov 16 2018 13:52:30

%S 1,1,3,6,16,34,90,211,515,1229,2960,6893,15753,34450,72235,143477,

%T 269186,473945,781713,1203617,1728192,2310376,2874232,3325215,3576980,

%U 3576980,3325215,2874232,2310376,1728192,1203617,781713,473945,269186

%N Number of 7 X 7 binary matrices with n=0..49 ones up to row and column permutations.

%H Andrew Howroyd, <a href="/A053304/b053304.txt">Table of n, a(n) for n = 0..49</a>

%F a(n) = A049311(n) for n <= 7.

%F Sum_{n=0..49} a(n) = 33642660 = A002724(7).

%o (PARI) \\ See A321609 for M.

%o vector(50, n, M(7,7,n-1))

%Y Row 7 of A052371 and A321609.

%Y Cf. A002724, A049311.

%K fini,full,nonn

%O 0,3

%A _Vladeta Jovovic_, Mar 05 2000

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Last modified April 24 15:18 EDT 2024. Contains 371960 sequences. (Running on oeis4.)