OFFSET
0,3
LINKS
G. C. Greubel, Table of n, a(n) for rows 2 to 50, flattened
D. D. Olesky, B. L. Shader and P. van den Driessche, Permanents of Hessenberg (0,1)-matrices, Electronic Journal of Combinatorics, 12 (2005) #R70.
FORMULA
P(n, k) = 2^(floor((k-n)/2)), if n <= k <= 2n.
MATHEMATICA
Table[2^(Floor[(k - n)/2]), {n, 2, 51}, {k, n, 2*n}] // Flatten (* G. C. Greubel, Mar 11 2017 *)
PROG
(PARI) for(n=2, 25, for(k=n, 2*n, print1(2^(floor((k-n)/2)), ", "))) \\ G. C. Greubel, Mar 11 2017
CROSSREFS
KEYWORD
easy,nonn,tabf
AUTHOR
Bryan Shader (bshader(AT)uwyo.edu), Jan 07 2006
STATUS
approved