0,2

Characteristic polynomial = -480x^4 - 1040 x^5 - 752 x^6 - 120 x^7 + 90 x^8 + 35x^9- x^11.

The molecule with this structure is known as Ferrocene.

Author?, Title?

Author?, Title?

Wikipedia, Ferrocene

M0 = {{0, 1, 1, 1, 1, 1, 0, 0, 0, 0, 1}, {1, 0, 1, 1, 1, 0, 1, 0, 0, 0, 1}, {1, 1, 0, 1, 1, 0, 0, 1, 0, 0, 1}, {1, 1, 1, 0, 1, 0, 0, 0, 1, 0, 1}, {1, 1, 1, 1, 0, 0, 0, 0, 0, 1, 1}, {1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1}, {0, 1, 0, 0, 0, 1, 0, 1, 1, 1, 1}, {0, 0, 1, 0, 0, 1, 1, 0, 1, 1, 1}, {0, 0, 0, 1, 0, 1, 1, 1, 0, 1, 1}, {0, 0, 0, 0, 1, 1, 1, 1, 1, 0, 1}, {1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0}} v[1] = Table[Fibonacci[n], {n, 0, 10}] v[n_] := v[n] = M0.v[n - 1] a = Table[v[n][[1]], {n, 1, 50}]

Sequence in context: A142609 A142735 A163150 this_sequence A142139 A106106 A093942

Adjacent sequences: A120714 A120715 A120716 this_sequence A120718 A120719 A120720

nonn

Roger Bagula (rlbagulatftn(AT)yahoo.com), Aug 12 2006

Edited by N. J. A. Sloane (njas(AT)research.att.com), Jul 13 2007