A185177 Different values of the permanent in (0,1) quadratic matrices with exactly 3 ones in each row and each column, in the increasing order.

6, 9, 12, 13, 17, 18, 20, 24, 25, 26, 27, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42

Offset

1,1

Comments

The sequence contains all different terms of A185179 in increasing order.

References

V. I. Bolshakov, On spectrum of permanent on Lambda_n^k, Proc. of Seminar on Discrete Math. and Appl., Moscow State Univ. (1986), 65-73 (in Russian).

Links

Table of n, a(n) for n=1..24.

V. S. Shevelev, Some problems of the theory of enumerating the permutations with restricted position, Journal of Soviet Mathematics, 61 (4) (1992) 2272-2317 (see pp.2307-2309).

Crossrefs

Cf. A176211, A176212, A185178, A185179.

Sequence in context: A315951 A081392 A225868 * A185179 A072546 A344805

Adjacent sequences: A185174 A185175 A185176 * A185178 A185179 A185180

Keyword

nonn,more

Author

Vladimir Shevelev, Feb 19 2011

Status

approved