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 A296492 Decimal expansion of limiting power-ratio for A294170; see Comments. 4
 1, 1, 2, 2, 0, 7, 1, 2, 9, 4, 7, 8, 7, 2, 0, 1, 9, 1, 3, 1, 3, 5, 6, 3, 9, 9, 3, 2, 1, 2, 0, 7, 4, 4, 8, 2, 2, 3, 5, 2, 3, 0, 1, 4, 9, 2, 6, 1, 9, 0, 4, 2, 5, 0, 7, 7, 3, 3, 5, 9, 0, 7, 6, 1, 3, 8, 9, 6, 1, 1, 3, 4, 2, 2, 3, 5, 4, 8, 8, 0, 1, 0, 7, 9, 7, 0 (list; constant; graph; refs; listen; history; text; internal format)
 OFFSET 2,3 COMMENTS Suppose that A = (a(n)), for n >= 0, is a sequence, and g is a real number such that a(n)/a(n-1) -> g. The ratio-sum for A is |a(1)/a(0) - g| + |a(2)/a(1) - g| + ..., assuming that this series converges. For A = A294170, we have g = (1 + sqrt(5))/2, the golden ratio (A001622). See the guide at A296469 for related sequences. LINKS EXAMPLE limiting power-ratio = 11.22071294787201913135639932120744822352... MATHEMATICA a[0] = 1; a[1] = 2; b[0] = 3; b[1] = 4; b[2] = 5; a[n_] := a[n] = a[n - 1] + a[n - 2] + b[n] + 2 n; j = 1; While[j < 16, k = a[j] - j - 1; While[k < a[j + 1] - j + 1, b[k] = j + k + 2; k++]; j++]; u = Table[a[n], {n, 0, k}];  (* A294170 *) z = 2000; g = GoldenRatio; h = Table[N[a[n]/g^n, z], {n, 0, z}]; StringJoin[StringTake[ToString[h[[z]]], 41], "..."] Take[RealDigits[Last[h], 10][[1]], 120]   (* A296492 *) CROSSREFS Cf. A001622, A294381, A296284, A296491. Sequence in context: A168615 A334921 A174104 * A135006 A323675 A243492 Adjacent sequences:  A296489 A296490 A296491 * A296493 A296494 A296495 KEYWORD nonn,easy,cons AUTHOR Clark Kimberling, Dec 20 2017 STATUS approved

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Last modified June 2 07:15 EDT 2020. Contains 334767 sequences. (Running on oeis4.)