The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A373796

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A373796

a(n) = Product_{k=1..n} k^Stirling_2(n,k).
(history; published version)

#33 by Alois P. Heinz at Wed Jul 10 16:02:50 EDT 2024

STATUS

proposed

approved

#32 by Paolo Xausa at Wed Jul 10 15:13:07 EDT 2024

STATUS

editing

proposed

#31 by Paolo Xausa at Wed Jul 10 15:06:56 EDT 2024

MATHEMATICA

A373796[n_] := Product[k^StirlingS2[n, k], {k, n}];

Array[A373796, 8, 0] (* Paolo Xausa, Jul 10 2024 *)

STATUS

approved

editing

#30 by Michael De Vlieger at Wed Jul 10 15:02:32 EDT 2024

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reviewed

approved

#29 by Hugo Pfoertner at Wed Jul 10 14:48:03 EDT 2024

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proposed

reviewed

#28 by Michel Marcus at Wed Jul 10 14:32:43 EDT 2024

STATUS

editing

proposed

#27 by Michel Marcus at Wed Jul 10 14:32:39 EDT 2024

REFERENCES

Alden F. Pixley, The ternary discriminator function, Mathematische Annalen, 191 (1971), 167-180.

LINKS

Alden F. Pixley, <a href="https://eudml.org/doc/162131">The Ternary Discriminator Function in Universal Algebra</a>, Mathematische Annalen, 191 (1971), 167-180.

STATUS

proposed

editing

#26 by Don Knuth at Wed Jul 10 14:04:34 EDT 2024

STATUS

editing

proposed

#25 by Don Knuth at Wed Jul 10 14:04:18 EDT 2024

COMMENTS

a(n) is the number of n-ary clones of the "discriminator function " t(x,y,z) defined by t(x,y,z)=x if x != y, t(x,x,z)=z.

REFERENCES

Alden F. Pixley, The ternary discriminator function, Mathematische Annalen, 191 (1971), 167-180.

STATUS

approved

editing

#24 by OEIS Server at Sun Jul 07 13:22:17 EDT 2024

LINKS

Hugo Pfoertner, <a href="/A373796/b373796_1.txt">Table of n, a(n) for n = 0..7</a>