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A278845 a(n) = permanent M_n where M_n is the n X n matrix m(i,j) = (i+j)^2. 7
1, 4, 145, 19016, 6176676, 4038562000, 4664347807268, 8698721212922496, 24535712762777208384, 99585504924929052560640, 559305193643176161735904320, 4211594966980674975033969246720, 41428564066728305721531962537124096, 520897493876353116313789796095643304960 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Vaclav Kotesovec, Table of n, a(n) for n = 0..32

MAPLE

with(LinearAlgebra):

a:= n-> `if`(n=0, 1, Permanent(Matrix(n, (i, j)-> (i+j)^2))):

seq(a(n), n=0..16);  # Vaclav Kotesovec, Nov 29 2016, after Alois P. Heinz

MATHEMATICA

Flatten[{1, Table[Permanent[Table[(i+j)^2, {i, 1, n}, {j, 1, n}]], {n, 1, 15}]}]

CROSSREFS

Cf. A005249, A085750, A085807, A204249, A278847.

Sequence in context: A239350 A030450 A041629 * A159197 A246961 A180375

Adjacent sequences:  A278842 A278843 A278844 * A278846 A278847 A278848

KEYWORD

nonn

AUTHOR

Vaclav Kotesovec, Nov 29 2016

STATUS

approved

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Last modified November 16 06:50 EST 2018. Contains 317258 sequences. (Running on oeis4.)