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A054732 Number of inequivalent n-state 2-input 2-output automata with respect to input and output permutations. 7
2, 44, 2038, 176936, 20943790, 3108818680, 553255960308, 114776687721990, 27196943499525498, 7246997465494260922, 2144966703605620242622, 698192439379511764136358, 247879443355186031710674326 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

REFERENCES

F. Harary and E. Palmer, Graphical Enumeration, 1973.

LINKS

Table of n, a(n) for n=1..13.

M. A. Harrison, A census of finite automata, Canad. J. Math., 17, No. 1, 1965, 100-113.

CROSSREFS

Sequence in context: A161744 A208045 A267070 * A161722 A290879 A054914

Adjacent sequences:  A054729 A054730 A054731 * A054733 A054734 A054735

KEYWORD

nonn

AUTHOR

Vladeta Jovovic, Apr 22 2000

STATUS

approved

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Last modified December 9 17:18 EST 2019. Contains 329879 sequences. (Running on oeis4.)