A074403 - OEIS

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A074403

Number of 4-ary Lyndon words of length n over Z_4 with trace 0 and subtrace 1.

12

0, 0, 2, 6, 16, 45, 128, 448, 1706, 6528, 24576, 90110, 327680, 1198665, 4438966, 16646144, 62914560, 238605640, 905969664, 3442684722, 13102206738, 49977848925, 191126044672, 732649837760, 2814062572336, 10825959997440, 41705086880768, 160862477970870

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,3

LINKS

Table of n, a(n) for n=1..28.

Max Alekseyev, PARI/GP scripts for miscellaneous math problems

F. Ruskey, 4-ary Lyndon words with given trace and subtrace

CROSSREFS

Cf. A068596, A074404, A074405, A074406, A074407, A074408, A074409, A074410, A074411, A074412, A074413.

Sequence in context: A005717 A333106 A025266 * A378341 A337318 A333070

Adjacent sequences: A074400 A074401 A074402 * A074404 A074405 A074406

KEYWORD

easy,nonn

AUTHOR

Frank Ruskey and Nate Kube, Aug 22 2002

EXTENSIONS

Terms a(16) onward from Max Alekseyev, Apr 09 2013

STATUS

approved