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A002631 Number of circuits of nullity n.
(Formerly M1502 N0590)
2
1, 2, 5, 16, 67, 435 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

REFERENCES

R. M. Foster, Geometrical circuits of electrical networks, Transactions of the American Institute of Electrical Engineers, 51 (1932), 309-317.

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=1..6.

CROSSREFS

Cf. A002632.

Sequence in context: A005163 A006116 A122082 * A107948 A220840 A058673

Adjacent sequences:  A002628 A002629 A002630 * A002632 A002633 A002634

KEYWORD

nonn,more,nice

AUTHOR

N. J. A. Sloane

STATUS

approved

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Last modified March 21 10:13 EDT 2019. Contains 321368 sequences. (Running on oeis4.)