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 1-10 of 28 results. Next

A103344 Number of representations of n as a sum of distinct elements of the Fibonacci-type sequence beginning 1, 4, 5, 9, 14, 23, 37, 60, ....

Original entry on oeis.org

1, 1, 0, 0, 1, 2, 1, 0, 0, 2, 2, 0, 0, 1, 3, 2, 0, 0, 2, 3, 1, 0, 0, 3, 3, 0, 0, 2, 4, 2, 0, 0, 3, 3, 0, 0, 1, 4, 3, 0, 0, 3, 5, 2, 0, 0, 4, 4, 0, 0, 2, 5, 3, 0, 0, 3, 4, 1, 0, 0, 4, 4, 0, 0, 3, 6, 3, 0, 0, 5, 5, 0, 0, 2, 6, 4, 0, 0, 4, 6, 2, 0, 0, 5, 5, 0, 0, 3, 6, 3, 0, 0, 4, 4, 0, 0, 1, 5, 4, 0, 0
Offset: 0

Views

Author

Casey Mongoven, Feb 01 2005

Keywords

Crossrefs

Programs

  • Mathematica
    imax = 10;
    f[1] = 1; f[2] = 4; f[n_] := f[n] = f[n-1] + f[n-2];
    p = Product[1+x^f[i], {i, 1, imax}];
    CoefficientList[p, x][[1;;f[imax]+1]] (* Jean-François Alcover, May 08 2019 *)

Extensions

a(0)=1 corrected by Alois P. Heinz, Sep 16 2015

A103343 Number of representations of n as a sum of distinct elements of the Fibonacci-type sequence beginning 3, 1, 4, 5, 9, 14, 23, 37, ....

Original entry on oeis.org

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

Views

Author

Casey Mongoven, Feb 01 2005

Keywords

Crossrefs

Extensions

a(0)=1 corrected by Alois P. Heinz, Sep 16 2015

A294204 Number of partitions of n into distinct Lucas parts (A000032) greater than 1.

Original entry on oeis.org

1, 0, 1, 1, 1, 1, 1, 2, 0, 2, 1, 2, 1, 2, 2, 1, 2, 1, 3, 0, 3, 2, 2, 2, 2, 3, 0, 3, 1, 3, 1, 3, 3, 2, 3, 2, 4, 0, 4, 2, 3, 2, 3, 3, 1, 3, 1, 4, 0, 4, 3, 3, 3, 3, 5, 0, 5, 2, 4, 2, 4, 4, 2, 4, 2, 5, 0, 5, 3, 3, 3, 3, 4, 0, 4, 1, 4, 1, 4, 4, 3, 4, 3, 6, 0, 6, 3, 5, 3, 5, 5, 2, 5, 2, 6, 0, 6, 4, 4, 4, 4
Offset: 0

Views

Author

Ilya Gutkovskiy, Oct 24 2017

Keywords

Comments

Convolution of the sequences A067595 and A033999.

Examples

			a(9) = 2 because we have [7, 2] and [4, 3, 2].
		

Crossrefs

Programs

  • Mathematica
    CoefficientList[Series[(1 + x^2) Product[1 + x^LucasL[k], {k, 2, 15}], {x, 0, 100}], x]

Formula

G.f.: (1 + x^2)*Product_{k>=2} (1 + x^Lucas(k)).

A219479 Number of representations of n as a sum of distinct elements of the generalized Fibonacci sequence beginning 1, 6, 7, 13, 20, 33, 53, ....

Original entry on oeis.org

1, 1, 0, 0, 0, 0, 1, 2, 1, 0, 0, 0, 0, 2, 2, 0, 0, 0, 0, 1, 3, 2, 0, 0, 0, 0, 2, 3, 1, 0, 0, 0, 0, 3, 3, 0, 0, 0, 0, 2, 4, 2, 0, 0, 0, 0, 3, 3, 0, 0, 0, 0, 1, 4, 3, 0, 0, 0, 0, 3, 5, 2, 0, 0, 0, 0, 4, 4, 0, 0, 0, 0, 2, 5, 3, 0, 0, 0, 0, 3, 4, 1, 0, 0, 0, 0, 4, 4, 0, 0, 0, 0, 3, 6, 3, 0, 0, 0, 0, 5, 5
Offset: 0

Views

Author

Casey Mongoven, Nov 20 2012

Keywords

References

  • J. Berstel, An Exercise on Fibonacci Representations, RAIRO/Informatique Theorique, Vol. 35, No 6, 2001, pp. 491-498.

Crossrefs

Extensions

a(0)=1 from Alois P. Heinz, Sep 16 2015

A219480 Number of representations of n as a sum of distinct elements of the generalized Fibonacci sequence beginning 1, 7, 8, 15, 23, 38, ....

Original entry on oeis.org

1, 1, 0, 0, 0, 0, 0, 1, 2, 1, 0, 0, 0, 0, 0, 2, 2, 0, 0, 0, 0, 0, 1, 3, 2, 0, 0, 0, 0, 0, 2, 3, 1, 0, 0, 0, 0, 0, 3, 3, 0, 0, 0, 0, 0, 2, 4, 2, 0, 0, 0, 0, 0, 3, 3, 0, 0, 0, 0, 0, 1, 4, 3, 0, 0, 0, 0, 0, 3, 5, 2, 0, 0, 0, 0, 0, 4, 4, 0, 0, 0, 0, 0, 2, 5, 3, 0, 0, 0, 0, 0, 3, 4, 1, 0, 0, 0, 0, 0, 4, 4, 0
Offset: 0

Views

Author

Casey Mongoven, Nov 20 2012

Keywords

Crossrefs

Extensions

a(0)=1 from Alois P. Heinz, Sep 16 2015

A219481 Number of representations of n as a sum of distinct elements of the generalized Fibonacci sequence beginning 1, 8, 9, 17, 26, ....

Original entry on oeis.org

1, 1, 0, 0, 0, 0, 0, 0, 1, 2, 1, 0, 0, 0, 0, 0, 0, 2, 2, 0, 0, 0, 0, 0, 0, 1, 3, 2, 0, 0, 0, 0, 0, 0, 2, 3, 1, 0, 0, 0, 0, 0, 0, 3, 3, 0, 0, 0, 0, 0, 0, 2, 4, 2, 0, 0, 0, 0, 0, 0, 3, 3, 0, 0, 0, 0, 0, 0, 1, 4, 3, 0, 0, 0, 0, 0, 0, 3, 5, 2, 0, 0, 0, 0, 0, 0, 4, 4, 0, 0, 0, 0, 0, 0, 2, 5, 3, 0, 0, 0, 0
Offset: 0

Views

Author

Casey Mongoven, Nov 20 2012

Keywords

Crossrefs

Extensions

a(0)=1 from Alois P. Heinz, Sep 16 2015

A219482 Number of representations of n as a sum of distinct elements of the generalized Fibonacci sequence beginning 1, 9, 10, 19, 29, 48, ....

Original entry on oeis.org

1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 2, 1, 0, 0, 0, 0, 0, 0, 0, 2, 2, 0, 0, 0, 0, 0, 0, 0, 1, 3, 2, 0, 0, 0, 0, 0, 0, 0, 2, 3, 1, 0, 0, 0, 0, 0, 0, 0, 3, 3, 0, 0, 0, 0, 0, 0, 0, 2, 4, 2, 0, 0, 0, 0, 0, 0, 0, 3, 3, 0, 0, 0, 0, 0, 0, 0, 1, 4, 3, 0, 0, 0, 0, 0, 0, 0, 3, 5, 2, 0, 0, 0, 0, 0, 0, 0, 4, 4, 0, 0, 0
Offset: 0

Views

Author

Casey Mongoven, Nov 20 2012

Keywords

Crossrefs

Extensions

a(0)=1 from Alois P. Heinz, Sep 16 2015

A219483 Number of representations of n as a sum of distinct elements of the generalized Fibonacci sequence beginning 2, 7, 9, 16, 25, 41, ....

Original entry on oeis.org

1, 0, 1, 0, 0, 0, 0, 1, 0, 2, 0, 1, 0, 0, 0, 0, 2, 0, 2, 0, 0, 0, 0, 1, 0, 3, 0, 2, 0, 0, 0, 0, 2, 0, 3, 0, 1, 0, 0, 0, 0, 3, 0, 3, 0, 0, 0, 0, 2, 0, 4, 0, 2, 0, 0, 0, 0, 3, 0, 3, 0, 0, 0, 0, 1, 0, 4, 0, 3, 0, 0, 0, 0, 3, 0, 5, 0, 2, 0, 0, 0, 0, 4, 0, 4, 0, 0, 0, 0, 2, 0, 5, 0, 3, 0, 0, 0, 0, 3, 0, 4, 0, 1, 0, 0
Offset: 0

Views

Author

Casey Mongoven, Nov 20 2012

Keywords

Crossrefs

Extensions

a(0)=1 from Alois P. Heinz, Sep 16 2015

A219484 Number of representations of n as a sum of distinct elements of the generalized Fibonacci sequence beginning 2, 9, 11, 20, 31, 51, ....

Original entry on oeis.org

1, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 2, 0, 1, 0, 0, 0, 0, 0, 0, 2, 0, 2, 0, 0, 0, 0, 0, 0, 1, 0, 3, 0, 2, 0, 0, 0, 0, 0, 0, 2, 0, 3, 0, 1, 0, 0, 0, 0, 0, 0, 3, 0, 3, 0, 0, 0, 0, 0, 0, 2, 0, 4, 0, 2, 0, 0, 0, 0, 0, 0, 3, 0, 3, 0, 0, 0, 0, 0, 0, 1, 0, 4, 0, 3, 0, 0, 0, 0, 0, 0, 3, 0, 5, 0, 2, 0, 0, 0, 0, 0
Offset: 0

Views

Author

Casey Mongoven, Nov 20 2012

Keywords

Crossrefs

Extensions

a(0)=1 from Alois P. Heinz, Sep 16 2015

A219485 Number of representations of n as a sum of distinct elements of the generalized Fibonacci sequence beginning 3, 7, 10, 17, 27, 44, ....

Original entry on oeis.org

1, 0, 0, 1, 0, 0, 0, 1, 0, 0, 2, 0, 0, 1, 0, 0, 0, 2, 0, 0, 2, 0, 0, 0, 1, 0, 0, 3, 0, 0, 2, 0, 0, 0, 2, 0, 0, 3, 0, 0, 1, 0, 0, 0, 3, 0, 0, 3, 0, 0, 0, 2, 0, 0, 4, 0, 0, 2, 0, 0, 0, 3, 0, 0, 3, 0, 0, 0, 1, 0, 0, 4, 0, 0, 3, 0, 0, 0, 3, 0, 0, 5, 0, 0, 2, 0, 0, 0, 4, 0, 0, 4, 0, 0, 0, 2, 0, 0, 5, 0, 0
Offset: 0

Views

Author

Casey Mongoven, Nov 20 2012

Keywords

Crossrefs

Extensions

a(0)=1 from Alois P. Heinz, Sep 16 2015
Showing 1-10 of 28 results. Next