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Revision History for A098746

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Showing entries 1-10 | older changes
Number of permutations of [1..n] which avoid 4231 and 42513.
(history; published version)
#91 by Joerg Arndt at Sun Jul 07 01:33:07 EDT 2024
STATUS

reviewed

approved

#90 by Michel Marcus at Sun Jul 07 01:21:53 EDT 2024
STATUS

proposed

reviewed

#89 by Jason Yuen at Sat Jul 06 22:10:42 EDT 2024
STATUS

editing

proposed

#88 by Jason Yuen at Sat Jul 06 22:10:30 EDT 2024
CROSSREFS

Cf. A00108, A000108, A001764.

STATUS

approved

editing

#87 by Joerg Arndt at Sun May 05 08:29:39 EDT 2024
STATUS

reviewed

approved

#86 by Michel Marcus at Sun May 05 08:01:24 EDT 2024
STATUS

proposed

reviewed

#85 by Peter Bala at Sun May 05 07:09:20 EDT 2024
STATUS

editing

proposed

#84 by Peter Bala at Sun May 05 07:09:08 EDT 2024
FORMULA

G.f: A(x) = 1 + series reversion of x/((1+x)*c(x/(1+x)), ), where c(x) = (1 - sqrt(1 - 4*x))(2*x) is the g.f. of the Catalan numbers A000108? . - Peter Bala, May 04 05 2024

CROSSREFS

Cf. A00108, A001764.

#83 by Peter Bala at Sat May 04 16:36:37 EDT 2024
FORMULA

G.f: A(x) = 1 + series reversion of x/((1+x)*c(x/(1+x)), where c(x) = (1 - sqrt(1 - 4*x))(2*x) is the g.f. of the Catalan numbers A000108? - Peter Bala, May 04 2024

KEYWORD

nonn,easy

STATUS

approved

editing

#82 by Michael De Vlieger at Sun Jan 09 10:00:39 EST 2022
STATUS

reviewed

approved