1,2

P. Raff, Table of n, a(n) for n = 1..200

F. Faase, Counting Hamilton cycles in product graphs

P. Raff, Spanning Trees in Grid Graphs. [From Paul Raff (praff(AT)math.rutgers.edu), Mar 07 2009]

P. Raff, Analysis of the Number of Spanning Trees of S_5 x P_n. Contains sequence, recurrence, generating function, and more. [From Paul Raff (praff(AT)math.rutgers.edu), Mar 07 2009]

P. Raff, Analysis of the Number of Spanning Trees of Grid Graphs. [Added by Paul Raff (paul(AT)myraff.com), Oct 30 2009]

a(n) = 144 a(n-1)

- 2640 a(n-2)

+ 6930 a(n-3)

- 2640 a(n-4)

+ 144 a(n-5)

- a(n-6)

[Modified by Paul Raff (paul(AT)myraff.com), Oct 30, 2009]

G.f.: -x(x^4+45x^3-45x-1)/(x^6-144x^5+2640x^4-6930x^3+2640x^2-144x+1) [From Paul Raff (paul(AT)myraff.com, Mar 07 2009]

a(n)=A004187(n)*(A001906(n))^3 = A004187(n)*A001906(n)*A049684(n). [R. Guy, seqfan list, Mar 28 2009] [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jun 03 2009]

Sequence in context: A076759 A133351 A076012 this_sequence A156741 A138730 A159821

Adjacent sequences: A092133 A092134 A092135 this_sequence A092137 A092138 A092139

nonn

Ralf Stephan, Mar 28 2004