A193086 Decimal expansion of the coefficient of x in the reduction of (e^x)*sin(x) by x^2->x+1.

2, 3, 9, 2, 5, 2, 8, 6, 5, 9, 2, 7, 2, 4, 2, 9, 0, 9, 7, 3, 8, 7, 4, 9, 2, 1, 1, 6, 5, 8, 9, 2, 2, 7, 7, 1, 9, 8, 4, 9, 9, 5, 5, 0, 1, 4, 5, 3, 6, 9, 6, 8, 6, 8, 6, 9, 2, 7, 7, 4, 8, 7, 9, 3, 5, 5, 3, 7, 5, 2, 1, 7, 6, 8, 8, 0, 0, 2, 3, 7, 4, 2, 1, 2, 5, 7, 9, 4, 2, 1, 4, 5, 3, 5, 9, 1, 0, 0, 8, 1

Offset

1,1

Comments

Reduction of a function f(x) by a substitution q(x)->s(x) is introduced at A193010.

Links

Table of n, a(n) for n=1..100.

Example

2.3925286592724290973874921165892277198499...

Mathematica

f[x_] := Exp[x] Sin[x]; r[n_] := Fibonacci[n];
c[n_] := SeriesCoefficient[Series[f[x], {x, 0, n}], n]
u0 = N[Sum[c[n]*r[n - 1], {n, 0, 100}], 100]
RealDigits[u0, 10]  (* A193085 *)
u1 = N[Sum[c[n]*r[n], {n, 0, 100}], 100]
RealDigits[u1, 10]  (* A193086 *)

Crossrefs

Cf. A193010, A192232, A193085.

Sequence in context: A030367 A028508 A021422 * A281289 A377024 A331388

Adjacent sequences: A193083 A193084 A193085 * A193087 A193088 A193089

Keyword

nonn,cons

Author

Clark Kimberling, Jul 15 2011

Status

approved