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A078354 Number of n X n matrices over an alphabet of size 20. 1
1, 20, 160000, 512000000000, 655360000000000000000, 335544320000000000000000000000000, 68719476736000000000000000000000000000000000000 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

a(n) = k^(n^2) with k = 2, 3, 4, ... counts n X n matrices over an alphabet of size k.

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 0..25

FORMULA

a(n) = 20^(n^2).

MATHEMATICA

Table[20^(n^2), {n, 0, 7}]

PROG

(MAGMA) [20^(n^2): n in [0..10]]; // Vincenzo Librandi, Jun 05 2011

CROSSREFS

Cf. A078353, A002416.

Sequence in context: A222745 A175853 A013766 * A203306 A211489 A172669

Adjacent sequences:  A078351 A078352 A078353 * A078355 A078356 A078357

KEYWORD

nonn

AUTHOR

Vincenzo Origlio (vincenzo.origlio(AT)itc.cnr.it), Nov 25 2002

STATUS

approved

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Last modified March 30 12:10 EDT 2020. Contains 333125 sequences. (Running on oeis4.)