OFFSET
1,5
COMMENTS
Relation to A099390: where two tilings align, they define a swap; where two tilings cross, they define a cycle.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..241
EXAMPLE
Table starts
0, 1, 0, 1, 0, 1, 0
1, 4, 9, 25, 64, 169, 441
0, 9, 0, 121, 0, 1681, 0
1, 25, 121, 1296, 9025, 78961, 609961
0, 64, 0, 9025, 0, 1399489, 0
1, 169, 1681, 78961, 1399489, 45265984, 994077841
0, 441, 0, 609961, 0, 994077841, 0
1,1156, 23409, 5040025, 219750976, 27918733921, 1671065533809
0,3025, 0, 40144896, 0, 669109276081, 0
1,7921,326041,326199721,34566618241.17750489675689,2827635608217289
Some.solutions for 4 X 4:
..4..5..3..2....4..0..3..2....1..2..6..7....4..0..3..7....1..2..3..7
..0..1..7..6....5..1..7..6....0..4..5..3....5..1..2..6....0..9.10..6
..9.10.14.15...12.13.11.10...12.10.11.15....9..8.11.15....4..5.14.15
..8.12.13.11....8..9.15.14....8..9.13.14...13.12.10.14....8.12.13.11
PROG
(PARI) T(n, k) = abs(polresultant(polchebyshev(n, 2, x/2), polchebyshev(k, 2, I*x/2))); \\ Seiichi Manyama, Oct 28 2023
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, with A099390 interpretative help from William Keith in the Sequence Fans Mailing List, Apr 19 2011
STATUS
approved