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 1-4 of 4 results.

A077465 Values of n such that A006046(n)/n^theta, where theta=log(3)/log(2), is a local minimum, computed according to Harborth's recurrence.

Original entry on oeis.org

1, 3, 5, 11, 21, 43, 87, 173, 347, 693, 1387, 2775, 5549, 11099, 22197, 44395, 88789, 177579, 355159, 710317, 1420635, 2841269, 5682539, 11365079, 22730157, 45460315, 90920629, 181841259, 363682519, 727365037, 1454730075
Offset: 1

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Author

Eric W. Weisstein, Nov 05 2002

Keywords

Comments

Harborth's recurrence can miss local minima that are 2 less than values in this sequence. A complete listing of cumulative minima is given by A084230.

Crossrefs

A077467 Sum of binary digits of A077465(n).

Original entry on oeis.org

1, 2, 2, 3, 3, 4, 5, 5, 6, 6, 7, 8, 8, 9, 9, 10, 10, 11, 12, 12, 13, 13, 14, 15, 15, 16, 16, 17, 18, 18, 19, 19, 20, 20, 21, 22, 22, 23, 23, 24, 25, 25, 26, 26, 27, 27, 28, 29, 29, 30, 30, 31, 32, 32, 33, 33, 34, 34, 35, 36, 36, 37, 37, 38, 39, 39, 40, 40, 41, 41, 42, 43, 43, 44
Offset: 1

Views

Author

Eric W. Weisstein, Nov 05 2002

Keywords

Crossrefs

A077466 a(n) = A006046(A077465(n)).

Original entry on oeis.org

1, 5, 11, 37, 103, 317, 967, 2869, 8639, 25853, 77623, 232997, 698735, 2096461, 6288871, 18867125, 56600351, 169802077, 509408279, 1528220741, 4584666319, 13753990765, 41261980487, 123785957845, 371357840767, 1114073555069
Offset: 1

Views

Author

Eric W. Weisstein, Nov 05 2002

Keywords

Crossrefs

A247274 Decimal expansion of lambda_3, an analog of the Stolarsky-Harborth constant for the number of elements not divisible by 3 in Pascal's triangle.

Original entry on oeis.org

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

Views

Author

Jean-François Alcover, Sep 11 2014

Keywords

Examples

			0.774281326315121453631686540833158436992751028221...
		

References

  • Steven R. Finch, Mathematical Constants, Cambridge University Press, 2003, Section 2.16 Stolarsky-Harborth Constant, p. 145.

Crossrefs

Programs

  • Mathematica
    lambda3 = (3/2)^(1 - Log[6]/Log[3]); RealDigits[lambda3, 10, 101] // First

Formula

lambda_3 = (3/2)^(1 - log(6)/log(3)).
Showing 1-4 of 4 results.