A001139 Number of stable feedback shift registers with n stages. (Formerly M3088 N1252)

1, 3, 21, 6615, 64595475

Offset

2,2

References

C. L. Liu, The Stability Problem of Several Classes of Feedback Shift-Registers in Theory of graphs: International Symposium. Held at the International Computation Center in Rome, Jul, 1966. Scientific editor, P. Rosenstiehl; Gordon and Breach, New York; Dunod, Paris 1967, xviii+416 pp. See page 238.

N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).

N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

Links

Table of n, a(n) for n=2..6.

Crossrefs

Sequence in context: A054739 A117508 A331897 * A359570 A341086 A277628

Adjacent sequences: A001136 A001137 A001138 * A001140 A001141 A001142

Keyword

nonn,more

Author

N. J. A. Sloane

Status

approved