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A110950
a(n) = permanent of an 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 prime and v_i = 1, otherwise.
0
1, 3, 12, 36, 383, 1560, 19162, 97680, 1804643, 4082400, 207316912, 1186043040, 25595629200, 266545072080, 6282386337194, 26013379392000, 1682187039875545, 11884755543091200, 396276417247253760, 5491416186030297600
OFFSET
3,2
PROG
(PARI) a(n)=my(A=matrix(n, n, i, j, !isprime(n*(i-1)+j))); matpermanent(A) \\ Herman Jamke (hermanjamke(AT)fastmail.fm), May 14 2007
CROSSREFS
Sequence in context: A074430 A064028 A326241 * A372880 A102744 A145951
KEYWORD
nonn
AUTHOR
Simone Severini, Sep 25 2005
EXTENSIONS
More terms from Herman Jamke (hermanjamke(AT)fastmail.fm), May 14 2007
STATUS
approved