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A133953 A second integer solution:d=2;h=1; A 4 X 4 vector Markov of a game matrix MA and an anti- game matrix MB such that game_valueMa+game_ValueMB =0 and the score is the sum of the vector out put of the Markov: MA={{0,1},{1,d}}; MB={{1/h,0},(2 - d + 1/h + h),h}}; Characteristic Polynomial is: -1 + 4 x^2 - 4 x^3 + x^4. 0
2, 6, 12, 24, 50, 110, 252, 592, 1410, 3382, 8140, 19624, 47346, 114270, 275836, 665888, 1607554, 3880934, 9369356, 22619576, 54608434, 131836366, 318281084, 768398448, 1855077890, 4478554134, 10812186060, 26102926152, 63018038258 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Using the general game value function: gv[M_] = Det[M]/Sum[Sum[M[[i, j]]*(-1)^(i + j), {i, 1, 2}], {j, 1, 2}] and matrices: MA = {{a, b}, {c, d}}; MB = {{e, f}, {g, h}}; The solution of: Solve[{b == 1, f == 0, a == 0, Det[MA] + 1 == 0, Det[MB] - 1 == 0, gv[MA] + gv[MB] == 0}, {c, d, e, g, h}] Gives the two Matrix solution: MA={{0,1},{1,d}}; MB={{1/h,0},{2-d+1/h+h,h}}; Besides the Fibonacci:d=1 and h=1 the only other obvious integer solution is: d=2 and h=1.

LINKS

Table of n, a(n) for n=1..29.

FORMULA

d = 2; h = 1; M = {{0, 1, 0, 0}, {1,d, 0, 0}, {0, 0, 1/h, 0}, {0, 0, 2 - d + 1/h + h, h}}; v[1] = {0, 1, 1, 0}; v[n_] := v[n] = M.v[n - 1] a(n) = Sum[v(i),{i,1,4}].

G.f.: 2*x*(1+x)*(1-2*x)/((1-x)^2*(1-2*x-x^2)). [Colin Barker, Feb 28 2012]

MATHEMATICA

d = 2; h = 1; M = {{0, 1, 0, 0}, {1, d, 0, 0}, {0, 0, 1/h, 0}, {0, 0, 2 - d + 1/h + h, h}}; v[1] = {0, 1, 1, 0}; v[n_] := v[n] = M.v[n - 1] a = Table[Apply[Plus, v[n]], {n, 1, 50}]

CROSSREFS

Sequence in context: A309841 A132176 A197469 * A122863 A170935 A277173

Adjacent sequences:  A133950 A133951 A133952 * A133954 A133955 A133956

KEYWORD

nonn,uned

AUTHOR

Roger L. Bagula, Jan 08 2008

STATUS

approved

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Last modified April 1 04:15 EDT 2020. Contains 333155 sequences. (Running on oeis4.)