OFFSET
0,4
REFERENCES
E. Munarini, Pell Graphs, Disc. Math., 342 (2019), 2415-2428.
LINKS
Eric Weisstein's World of Mathematics, Graph Cycle
Eric Weisstein's World of Mathematics, Pell Graph
Index entries for linear recurrences with constant coefficients, signature (6,-9,-4,9,6,1).
FORMULA
MATHEMATICA
Table[(n (2 n - 3) (-I)^n ChebyshevT[n, I] + (2 n^2 - 2 n + 1) Fibonacci[n, 2])/16, {n, 0, 20}]
LinearRecurrence[{6, -9, -4, 9, 6, 1}, {0, 0, 1, 8, 40, 164}, 20]
CoefficientList[Series[-x^2 (1 + x)^2/(-1 + 2 x + x^2)^3, {x, 0, 20}], x]
CROSSREFS
KEYWORD
nonn
AUTHOR
Eric W. Weisstein, Jul 30 2023
STATUS
approved