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.

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A045998 Binary Gleichniszahlen-Reihe (BGR) sequence: describe previous term (cf. A005150), reduce number of digits seen mod 2 (then for the purposes of this data-base, discard leading zeros).

Original entry on oeis.org

1, 11, 1, 1011, 111001, 110011, 10001, 10111011, 1110111001, 1110110011, 1110010001, 1100111011, 100111001, 101100110011, 11100100010001, 11001110111011, 1001110111001, 1011001110110011, 111001001110010001
Offset: 0

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Comments

Terms with a leading zero: a(2), a(6), a(12), a(16), a(20), a(28), a(32), a(36), a(40), a(44), a(48), a(60), ...

Examples

			1, 11, 01, 1011, 111001, 110011, 010001, ... (after 110011, next term is 212021 -> 010001 -> 10001).
		

References

  • N. Worrick, S. Lewis and B. Shrader, A possible formula for the length of BGR sequences, Graph Theory Notes of New York, XXXVI (1999), p. 25.

Crossrefs

Extensions

More terms from Patrick De Geest, Jun 15 1999

A045999 Length of n-th term of binary Gleichniszahlen-Reihe (BGR) sequence A045998.

Original entry on oeis.org

1, 2, 2, 4, 6, 6, 6, 8, 10, 10, 10, 10, 10, 12, 14, 14, 14, 16, 18, 18, 18, 20, 22, 22, 22, 22, 22, 22, 22, 24, 26, 26, 26, 28, 30, 30, 30, 32, 34, 34, 34, 36, 38, 38, 38, 40, 42, 42, 42, 44, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 48, 50, 50, 50, 52, 54, 54, 54, 56, 58, 58
Offset: 0

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Comments

Now we count the leading zeros, of course.

Examples

			1, 11, 01, 1011, 111001, 110011, 010001, ...
		

References

  • N. Worrick, S. Lewis and B. Shrader, A possible formula for the length of BGR sequences, Graph Theory Notes of New York, XXXVI (1999), p. 25.

Crossrefs

Formula

Reference gives a conjectured formula.

Extensions

More terms from Patrick De Geest, Jun 15 1999
Showing 1-2 of 2 results.