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.

A360384 Number of permutations p of [n] satisfying |p(i+7) - p(i)| <> 7 for all 1 <= i <= n-7.

Original entry on oeis.org

1, 1, 2, 6, 24, 120, 720, 5040, 38880, 323520, 2953728, 29666304, 326584320, 3919011840, 50969640960, 705722941440, 10504707686400, 167258901086208, 2836455721721856, 51038126752727040, 971132188892405760
Offset: 0

Views

Author

Seiichi Manyama, Feb 05 2023

Keywords

Crossrefs

Column k=7 of A333706.
Cf. A110128.

Extensions

a(12)-a(20) from Alois P. Heinz, Feb 07 2023

A360386 Number of permutations p of [n] satisfying |p(i+8) - p(i)| <> 8 for all 1 <= i <= n-8.

Original entry on oeis.org

1, 1, 2, 6, 24, 120, 720, 5040, 40320, 352800, 3312000, 33742080, 373948416, 4498421760, 58506854400, 819095961600, 12290021130240, 194999390208000, 3294723692298240, 59059379675381760, 1119453588069875712
Offset: 0

Views

Author

Seiichi Manyama, Feb 05 2023

Keywords

Crossrefs

Column k=8 of A333706.
Cf. A110128.

Extensions

a(12)-a(20) from Alois P. Heinz, Feb 07 2023

A360462 Number of permutations p of [n] such that |p(i+9) - p(i)| <> 9 for i in [n-9].

Original entry on oeis.org

1, 1, 2, 6, 24, 120, 720, 5040, 40320, 362880, 3548160, 37054080, 416551680, 5050368000, 65944535040, 924630958080, 13873661706240, 221978587299840, 3774394191052800, 67494538767237120, 1276009602375352320, 25429720417085030400
Offset: 0

Views

Author

Alois P. Heinz, Feb 07 2023

Keywords

Crossrefs

Column k=9 of A333706.
Cf. A000142.

A360463 Number of permutations p of [n] such that |p(i+10) - p(i)| <> 10 for i in [n-10].

Original entry on oeis.org

1, 1, 2, 6, 24, 120, 720, 5040, 40320, 362880, 3628800, 39191040, 450293760, 5534403840, 72864645120, 1026562867200, 15441868062720, 247319592468480, 4205303137566720, 75695456476200960, 1438421245702963200, 28616864514850160640
Offset: 0

Views

Author

Alois P. Heinz, Feb 07 2023

Keywords

Crossrefs

Column k=10 of A333706.
Cf. A000142.
Previous Showing 11-14 of 14 results.