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A110956 a(n) = permanent of the n X n matrix M of zeros and ones defined as follows: if we concatenate the rows of M to form a vector v of length n^2, v_i = 0 if i is an entry from the sequence A045506 (inscribe 2 spheres of curvature 2 inside sphere of curvature -1, continue to inscribe spheres where possible; the sequence gives list of curvatures). 0
2, 6, 20, 0, 368, 2016 (list; graph; refs; listen; history; text; internal format)
OFFSET

3,1

LINKS

Table of n, a(n) for n=3..8.

CROSSREFS

Cf. A045506.

Sequence in context: A186770 A332406 A127942 * A298446 A205012 A254120

Adjacent sequences:  A110953 A110954 A110955 * A110957 A110958 A110959

KEYWORD

nonn

AUTHOR

Simone Severini, Sep 26 2005

STATUS

approved

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Last modified June 21 11:49 EDT 2021. Contains 345363 sequences. (Running on oeis4.)