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A357114
T(n,m) is the denominator of the resistance between two diametrically opposite nodes of a rectangular electric network of n*m quadratic meshes in which all edges are replaced by one-ohm resistors, where T(n,m) is a triangle read by rows.
2
1, 5, 2, 8, 69, 7, 19, 209, 1023, 22, 15, 440, 16744, 1205, 495, 71, 2639, 128617, 4282081, 1169441, 2494, 112, 11067, 21728, 59292739, 3498175408, 287916805961, 360161, 265, 4142, 5317209, 579080689, 43600867640, 9153575734849, 273893674761, 153254
OFFSET
1,2
EXAMPLE
The triangle begins:
1;
7/5, 3/2;
15/8, 121/69, 13/7;
45/19, 430/209, 2089/1023, 47/22;
43/15, 1047/440, 37873/16744, 2749/1205, 1171/495
CROSSREFS
A357113 are the corresponding numerators.
Sequence in context: A198192 A046878 A375600 * A078335 A021658 A270859
KEYWORD
nonn,frac,tabl
AUTHOR
Hugo Pfoertner, Sep 15 2022
STATUS
approved