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A058821 Dimensions of homogeneous subspaces of shuffle algebra over 6-letter alphabet (see A058766 for 2-letter case). 0
1, 6, 21, 146, 981, 6222, 38921, 239946, 1469826, 8957976, 54420339, 329815506, 1995387801 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

REFERENCES

M. Lothaire, Combinatorics on words, Cambridge mathematical library, 1983, p. 126 (definition of shuffle algebra).

LINKS

Table of n, a(n) for n=0..12.

CROSSREFS

Cf. A058766.

Sequence in context: A081077 A093775 A318103 * A054366 A304264 A210443

Adjacent sequences:  A058818 A058819 A058820 * A058822 A058823 A058824

KEYWORD

nonn

AUTHOR

Claude Lenormand (claude.lenormand(AT)free.fr), Jan 04 2001

STATUS

approved

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Last modified January 27 05:50 EST 2022. Contains 350601 sequences. (Running on oeis4.)