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A032151 Shifts left under "CGJ" (necklace, element, labeled) transform. 0
1, 1, 1, 4, 8, 38, 266, 1680, 10668, 87444, 1057140, 10108644, 114112320, 1404689244, 20654453736, 294649177704, 4556106886632, 76389128377296, 1363358922375072, 25400563124152944, 497084494996824840 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

LINKS

Table of n, a(n) for n=1..21.

CROSSREFS

Sequence in context: A032226 A001889 A032138 * A032042 A032056 A214535

Adjacent sequences:  A032148 A032149 A032150 * A032152 A032153 A032154

KEYWORD

nonn,eigen

AUTHOR

Christian G. Bower

STATUS

approved

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Last modified February 25 12:34 EST 2018. Contains 299654 sequences. (Running on oeis4.)