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Revision History for A371761 (Bold, blue-underlined text is an addition; faded, red-underlined text is a deletion.)

Showing entries 1-10 | older changes
Array read by antidiagonals: The number of parades with n girls and k boys that begin with a girl and end with a boy.
(history; published version)
#64 by Peter Luschny at Sun Oct 06 10:53:24 EDT 2024
STATUS

editing

approved

#63 by Peter Luschny at Sun Oct 06 10:53:19 EDT 2024
PROG

R[k] = k**n # Chancing Changing this to R[k] = (n + 1)**k generates A344499.

STATUS

approved

editing

#62 by Peter Luschny at Sat Apr 27 17:47:47 EDT 2024
STATUS

editing

approved

#61 by Peter Luschny at Sat Apr 27 17:42:19 EDT 2024
COMMENTS

The array rows are recursively generated by applying the Akiyama-Tanigawa algorithm to the powers (see the Python implementation below). So In this way the array is becomes the image of A004248 under the AT-transformation executed row by rowwhen applied to the rows of A004248. This makes the array closely linked to A344499, which is generated in the same way, but applied to the columns of A004248.

PROG

R[k] = k**n # Chancing this to R[k] = (n + 1)**k generates A344499.

CROSSREFS
STATUS

approved

editing

#60 by Michael De Vlieger at Sat Apr 20 16:19:37 EDT 2024
STATUS

proposed

approved

#59 by Michel Marcus at Sat Apr 20 16:12:29 EDT 2024
STATUS

editing

proposed

#58 by Michel Marcus at Sat Apr 20 16:12:20 EDT 2024
LINKS

Don Knuth, <a href="http://cs.stanford.edu/~knuth/papers/poly-Bernoulli.pdf">Parades and poly-Bernoulli bijections</a>, Mar 31 2024. See (16.2). [broken link]

STATUS

approved

editing

Discussion
Sat Apr 20
16:12
Michel Marcus: the link works for me
#57 by Peter Luschny at Sat Apr 20 16:11:03 EDT 2024
STATUS

proposed

approved

#56 by Hugo Pfoertner at Sat Apr 20 15:52:18 EDT 2024
STATUS

editing

proposed

Discussion
Sat Apr 20
16:10
Peter Luschny: Hmm...
16:11
Michel Marcus: the link works for me
#55 by Hugo Pfoertner at Sat Apr 20 15:51:54 EDT 2024
LINKS

Don Knuth, <a href="http://cs.stanford.edu/~knuth/papers/poly-Bernoulli.pdf">Parades and poly-Bernoulli bijections</a>, Mar 31 2024. See (16.2). [broken link]

STATUS

approved

editing