A329778 - OEIS

%I #11 Jul 13 2022 14:48:51

%S 4,8,16,30,56,112,232,474,928,1744,3976,6540,16136,29680,54208

%N Number of symmetric subsets of {1,..,2n} for which the reciprocal of the modular-part product is also a modular-part product.

%H Richard Blecksmith, John Brillhart, and Irving Gerst, <a href="https://doi.org/10.1090/S0025-5718-1990-0995206-9">On the mod 2 reciprocation of infinite modular-part products and the parity of certain partition functions</a>, Mathematics of Computation 54.189 (1990): 345-376. The sequence appears in Table 3.

%Y Cf. A329777.

%K nonn,more

%O 1,1

%A _N. J. A. Sloane_, Nov 29 2019