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.

Previous Showing 11-14 of 14 results.

A323963 Number of defective (binary) heaps on n elements with exactly seven defects.

Original entry on oeis.org

0, 210, 7616, 185460, 4200960, 77887920, 1310267904, 21025461600, 314958758400, 4765553385120, 69086614338560, 1013373907056960, 14714554645140480, 212868974122848000, 3168605413206097920, 45787509175434048000, 705241846739554713600, 10297540417675899801600
Offset: 7

Views

Author

Alois P. Heinz, Feb 09 2019

Keywords

Comments

Or number of permutations p of [n] having exactly seven indices i in {1,...,n} such that p(i) > p(floor(i/2)).

Crossrefs

Column k=7 of A306343.
Cf. A056971.

A323964 Number of defective (binary) heaps on n elements with exactly eight defects.

Original entry on oeis.org

0, 896, 32460, 1201920, 29987760, 705522048, 14197154400, 264121228800, 4765553385120, 80958196300800, 1386261729792960, 22797317814635520, 378396940680172800, 6210934579834490880, 101592763596409536000, 1694705349980956262400, 27653450672540750745600
Offset: 8

Views

Author

Alois P. Heinz, Feb 09 2019

Keywords

Comments

Or number of permutations p of [n] having exactly eight indices i in {1,...,n} such that p(i) > p(floor(i/2)).

Crossrefs

Column k=8 of A306343.
Cf. A056971.

A323965 Number of defective (binary) heaps on n elements with exactly nine defects.

Original entry on oeis.org

0, 3360, 190800, 6837600, 239978112, 6268548000, 153775564800, 3365570435040, 69086614338560, 1386261729792960, 26344715667079680, 502986050203680000, 9251596509192069120, 171657357483560256000, 3142069546022259916800, 57414248711716723200000
Offset: 9

Views

Author

Alois P. Heinz, Feb 09 2019

Keywords

Comments

Or number of permutations p of [n] having exactly nine indices i in {1,...,n} such that p(i) > p(floor(i/2)).

Crossrefs

Column k=9 of A306343.
Cf. A056971.

A323966 Number of defective (binary) heaps on n elements with exactly ten defects.

Original entry on oeis.org

0, 19200, 947760, 49680576, 1744142400, 60169824000, 1646888944800, 42633973724160, 1013373907056960, 22797317814635520, 502986050203680000, 10556482426015426560, 222685725334400064000, 4535040919258899456000, 92995172484979478630400, 1880492299058130490163200
Offset: 10

Views

Author

Alois P. Heinz, Feb 09 2019

Keywords

Comments

Or number of permutations p of [n] having exactly ten indices i in {1,...,n} such that p(i) > p(floor(i/2)).

Crossrefs

Column k=10 of A306343.
Cf. A056971.
Previous Showing 11-14 of 14 results.