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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A225970 Number of permutations of [n] having exactly 9 strong fixed blocks.

Original entry on oeis.org

1, 33, 627, 9073, 111870, 1248766, 13110889, 132972135, 1329550237, 13327791693, 135953350084, 1431074091372, 15754008527799, 183668908342603, 2292564722628641, 30882981325870191, 450836857113720902, 7132752605955632598, 121911367111794972727
Offset: 25

Views

Author

Alois P. Heinz, May 22 2013

Keywords

Comments

See A186373 for the definition of strong fixed blocks.

Crossrefs

Column k=9 of A186373.

Formula

a(n) ~ 8 * n! / n^23. - Vaclav Kotesovec, Aug 29 2014

A225971 Number of permutations of [n] having exactly 10 strong fixed blocks.

Original entry on oeis.org

1, 37, 777, 12270, 163175, 1942929, 21528521, 228041846, 2356747034, 24163001708, 249403489710, 2627573750274, 28640525859359, 327328342356269, 3972468538438185, 51748509141715110, 729042517121700175, 11143605769040625033, 184620160995781020415
Offset: 28

Views

Author

Alois P. Heinz, May 22 2013

Keywords

Comments

See A186373 for the definition of strong fixed blocks.

Crossrefs

Column k=10 of A186373.

Formula

a(n) ~ 9 * n! / n^26. - Vaclav Kotesovec, Aug 29 2014
Previous Showing 11-12 of 12 results.