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Number of unitary rings with additive group (Z/nZ)^3.
6

%I #44 Feb 13 2021 14:59:31

%S 1,7,7,27,7,49,7

%N Number of unitary rings with additive group (Z/nZ)^3.

%H R. Gilmer and J. Mott, <a href="https://projecteuclid.org/euclid.pja/1195519146">Associative rings of order_P^3</a>, Proc. Jpn. Acad., 49, No. 10, (1973), 725-799.

%H Christof Nöbauer, <a href="/A341201/a341201_2.pdf">Numbers of rings on groups of prime power order</a>

%H Christof Nöbauer, <a href="https://web.archive.org/web/20070613192932/http://www.algebra.uni-linz.ac.at/~noebsi/">Home page</a>

%Y Cf. A341202, A037234, A037291, A127708, A127707, A037289, A037290, A038036, A307000, A339948.

%K nonn,mult,more

%O 1,2

%A _José María Grau Ribas_, Feb 07 2021