A338597 Denominators of resistance values < 1 ohm that can be obtained from a network of exactly 7 one-ohm resistors, but not from any network with fewer than 7 one-ohm resistors. Numerators are in A338580.
7, 11, 14, 13, 15, 18, 17, 13, 16, 19, 20, 17, 14, 19, 21, 18, 17, 19, 16, 24, 19, 21, 21, 19, 24, 16, 19, 17, 18, 21, 19, 14, 17, 20, 19, 16, 13, 17, 18, 15, 19, 13, 14, 19, 11, 17, 19, 20, 8, 9, 21, 12, 13, 14, 15, 16, 19
Offset: 1
Examples
The list of the 114 = A338197(7) resistance values, sorted by increasing size of R = A338580(n)/a(n) = A338607(n)/A338600(7), is the union of [1/7, 2/11, 3/14, ..., 14/15, 15/16, 18/19] and of the corresponding reciprocal resistances > 1 ohm [19/18, 16/15, 15/14, ..., 14/3, 11/2, 7].