cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

Showing 1-2 of 2 results.

A176636 Periodic sequence: Repeat [57, 71].

Original entry on oeis.org

57, 71, 57, 71, 57, 71, 57, 71, 57, 71, 57, 71, 57, 71, 57, 71, 57, 71, 57, 71, 57, 71, 57, 71, 57, 71, 57, 71, 57, 71, 57, 71, 57, 71, 57, 71, 57, 71, 57, 71, 57, 71, 57, 71, 57, 71, 57, 71, 57, 71, 57, 71, 57, 71, 57, 71, 57, 71, 57, 71, 57, 71, 57, 71, 57, 71, 57, 71, 57
Offset: 0

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Author

Klaus Brockhaus, Apr 22 2010

Keywords

Comments

Continued fraction expansion of (4047+sqrt(16394397))/142.
Inverse binomial transform of 57 followed by 128*A000079.
Third inverse binomial transform of A176635.

Crossrefs

Cf. A000079 (powers of 2), A176635, A176713 (decimal expansion of (4047+sqrt(16394397))/142).

Programs

  • Magma
    &cat[ [57, 71]: k in [1..35] ];
  • Mathematica
    PadRight[{},100,{57,71}] (* Harvey P. Dale, Jun 18 2014 *)

Formula

a(n) = 64-7*(-1)^n.
a(n) = -a(n-1)+128 for n > 0; a(0) = 57.
a(n) = a(n-2) for n > 1; a(0) = 57, a(1) = 71.
G.f.: (57+71*x)/((1-x)*(1+x)).

Extensions

Comment, crossref and keyword cofr added by Klaus Brockhaus, Apr 24 2010

A176714 Decimal expansion of sqrt(16394397).

Original entry on oeis.org

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

Views

Author

Klaus Brockhaus, Apr 24 2010

Keywords

Comments

Continued fraction expansion of sqrt(16394397) is 4048 followed by (repeat 1, 2023, 2, 2023, 1, 8096).
sqrt(16394397) = sqrt(3)*sqrt(19)*sqrt(71)*sqrt(4051).

Examples

			sqrt(16394397) = 4048.99950605084663055493...
		

Crossrefs

Cf. A002194 (decimal expansion of sqrt(3)), A010475 (decimal expansion of sqrt(19)), A010523 (decimal expansion of sqrt(71)), A176715 (decimal expansion of sqrt(4051)), A176713 (decimal expansion of (4047+sqrt(16394397))/142).

Programs

  • Maple
    Digits:=100: evalf(sqrt(16394397)); # Wesley Ivan Hurt, Jul 07 2014
  • Mathematica
    RealDigits[Sqrt[16394397], 10, 100, 3] (* Wesley Ivan Hurt, Jul 07 2014 *)
Showing 1-2 of 2 results.