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A246772
Decimal expansion of 'u', an auxiliary constant associated with the asymptotic number of row-convex polyominoes.
1
1, 8, 0, 9, 1, 5, 5, 0, 1, 8, 8, 1, 5, 6, 0, 6, 0, 9, 5, 1, 5, 8, 9, 5, 7, 7, 3, 0, 1, 0, 0, 0, 1, 8, 0, 0, 4, 9, 4, 4, 2, 9, 1, 0, 3, 3, 9, 9, 8, 8, 1, 0, 0, 0, 4, 9, 9, 5, 9, 4, 8, 3, 2, 4, 4, 3, 8, 9, 8, 1, 7, 8, 0, 8, 2, 4, 5, 6, 3, 2, 8, 6, 5, 8, 4, 2, 9, 4, 6, 2, 4, 4, 0, 7, 4, 9, 0, 4, 9, 1, 1, 5, 5
OFFSET
0,2
FORMULA
u = first root of 944*x^3 - 295*x^2 + 28*x - 1.
A001169(n) ~ u*v^n, where v = A246773.
EXAMPLE
0.180915501881560609515895773010001800494429103399881...
MATHEMATICA
u = Root[944*x^3 - 295*x^2 + 28*x - 1, x, 1]; RealDigits[u, 10, 103] // First
CROSSREFS
KEYWORD
nonn,cons,easy
AUTHOR
STATUS
approved