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A074446 Number of 4-ary Lyndon words of length n over GF(4) with trace 0 and subtrace 0. 5
1, 0, 2, 6, 15, 40, 153, 528, 1841, 6528, 23901, 87550, 322875, 1198080, 4474738, 16779264, 63164175, 238605640, 904213989, 3436000050, 13089461538, 49977753600, 191219550297, 733008101200, 2814750270420, 10825959997440, 41699998413248, 160842848628150, 621186162441675 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

Table of n, a(n) for n=1..29.

F. Ruskey, 4-ary Lyndon words with given trace and subtrace over GF(4)

EXAMPLE

a(3;0,0)=2 since the two 4-ary Lyndon words of trace 0, subtrace 0 and length 3 are { 123, 132 }.

CROSSREFS

Cf. A074447, A074448, A074449, A074450.

Cf. A054661, A073995, A073996, A073997, A073998, A073999.

Sequence in context: A319560 A061322 A004664 * A303551 A180666 A280788

Adjacent sequences:  A074443 A074444 A074445 * A074447 A074448 A074449

KEYWORD

nonn

AUTHOR

Frank Ruskey and Nate Kube, Aug 23 2002

EXTENSIONS

Terms a(16) and beyond from Andrey Zabolotskiy, Jul 21 2021

STATUS

approved

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Last modified September 27 08:39 EDT 2021. Contains 347689 sequences. (Running on oeis4.)