$\text{Distance-regular graphs of valency 4}$

No. of verticesGraphIntersection Array
$6$$\text{Octahedron }J(4,2)$$\{4,1;1,4\}$
$9$$\text{Paley graph }P_9 \cong H(2,3)$$\{4,2;1,2\}$
$10$$K_{5,5}-I$$\{4,3,1;1,3,4\}$
$14$$\text{Distance-3 graph of Heawood graph}$$\{4,3,2;1,2,4\}$
$15$$\text{Line graph of Petersen graph}$$\{4,2,1;1,1,4\}$
$16$$\text{4-cube }Q_4 \cong H(4,2)$$\{4,3,2,1;1,2,3,4\}$
$21$$\text{Line graph of Heawood graph}$$\{4,2,2;1,1,2\}$
$26$$\text{Incidence graph of PG(2,3)}$$\{4,3,3;1,1,4\}$
$32$$\text{Incidence graph of }AG(2,4) \text{ minus a parallel class}$$\{4,3,3,1;1,1,3,4\}$
$35$$\text{Odd graph }O_4$$\{4,3,3;1,1,2\}$
$45$$\text{Line graph of Tutte's 8-cage}$$\{4,3,3;1,1,2\}$
$70$$\text{Doubled Odd Graph }D(O_4)$$\{4,3,3,2,2,1,1;1,1,2,2,3,3,4\}$
$80$$\text{Incidence graph of }GQ(3,3)$$\{4,3,3,3;1,1,1,4\}$
$189$$\text{Line graph of Tutte's 12-cage}$$\{4,2,2,2,2,2;1,1,1,1,1,2\}$
$728$$\text{Incidence graph of }GH(3,3)$$\{4,3,3,3,3,3;1,1,1,1,1,4\}$

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Last updated: 21 February 2017