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A206426
Nonnegative values x of solutions (x, y) to the Diophantine equation x^2+(x+161)^2 = y^2.
7
0, 19, 60, 84, 115, 184, 231, 279, 400, 483, 580, 799, 931, 1104, 1495, 1764, 2040, 2739, 3220, 3783, 5056, 5824, 6831, 9108, 10675, 12283, 16356, 19159, 22440, 29859, 34335, 40204, 53475, 62608, 71980, 95719, 112056, 131179, 174420, 200508, 234715, 312064
OFFSET
1,2
LINKS
Index entries for linear recurrences with constant coefficients, signature (1,0,0,0,0,0,0,0,6,-6,0,0,0,0,0,0,0,-1,1).
FORMULA
G.f.: x^2*(17*x^17 +27*x^16 +12*x^15 +13*x^14 +23*x^13 +13*x^12 +12*x^11 +27*x^10 +17*x^9 -83*x^8 -121*x^7 -48*x^6 -47*x^5 -69*x^4 -31*x^3 -24*x^2 -41*x -19)/((x -1)*(x^18 -6*x^9 +1)). - Colin Barker, Aug 05 2012
MATHEMATICA
LinearRecurrence[{1, 0, 0, 0, 0, 0, 0, 0, 6, -6, 0, 0, 0, 0, 0, 0, 0, -1, 1}, {0, 19, 60, 84, 115, 184, 231, 279, 400, 483, 580, 799, 931, 1104, 1495, 1764, 2040, 2739, 3220}, 120]
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
STATUS
approved