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A246123 Number of inequivalent n X n matrices with entries from [7], where equivalence means permutations of rows or columns or the symbol set. 1
1, 1, 9, 773, 12872565, 18591188894392, 1015303397880332132695, 2006943506669869627232430791792, 148870004307406359229098552180494085417700, 427548526344388851318876075291587420840143834762159765 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..9.

CROSSREFS

Column k=7 of A242095.

Sequence in context: A124417 A265463 A159356 * A246124 A223380 A246125

Adjacent sequences:  A246120 A246121 A246122 * A246124 A246125 A246126

KEYWORD

nonn

AUTHOR

Alois P. Heinz, Aug 15 2014

STATUS

approved

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Last modified February 27 03:58 EST 2021. Contains 341646 sequences. (Running on oeis4.)