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A051172 T(n,7), array T as in A051168; a count of Lyndon words; aperiodic necklaces with 7 black beads and n-7 white beads. 1
0, 1, 4, 12, 30, 66, 132, 245, 429, 715, 1144, 1768, 2652, 3876, 5537, 7752, 10659, 14421, 19228, 25300, 32890, 42287, 53820, 67860, 84825, 105183, 129456, 158224, 192129, 231880, 278256, 332112, 394383, 466089, 548340 (list; graph; refs; listen; history; text; internal format)
OFFSET

7,3

LINKS

Table of n, a(n) for n=7..41.

Index entries for sequences related to Lyndon words

FORMULA

G.f.: -(x^7/7)*(1/(1- x^7)+1/(-1+x)^7). - Herbert Kociemba, Oct 16 2016

CROSSREFS

Cf. A000031, A001037, A051168. Same as A011797(n-1).

Sequence in context: A274250 A004036 A011797 * A032192 A212587 A118425

Adjacent sequences:  A051169 A051170 A051171 * A051173 A051174 A051175

KEYWORD

nonn

AUTHOR

Clark Kimberling

EXTENSIONS

a(20) corrected by Herbert Kociemba, Oct 16 2016

STATUS

approved

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Last modified February 16 14:47 EST 2019. Contains 320163 sequences. (Running on oeis4.)