A335691 A000166(n)^2.

1, 0, 1, 4, 81, 1936, 70225, 3437316, 220017889, 17821182016, 1782120871521, 215636596084900, 31051670188655281, 5247732257301156624, 1028555522495168900401, 231424992560450869558756, 59244798095490816735545025, 17121746649596584336387952896

Offset

0,4

References

I. Kaplansky and J. Riordan, The problème des ménages, Scripta Math. 12, (1946), 113-124. See p. 115.

Links

Table of n, a(n) for n=0..17.

I. Kaplansky and J. Riordan, The problème des ménages, Scripta Math. 12, (1946), 113-124. [Scan of annotated copy]

Crossrefs

Cf. A000166, A335692, A335693.

Sequence in context: A041189 A123198 A202831 * A264197 A221251 A128911

Adjacent sequences: A335688 A335689 A335690 * A335692 A335693 A335694

Keyword

nonn

Author

N. J. A. Sloane, Jul 20 2020

Status

approved