OFFSET
1,2
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..84
EXAMPLE
Table starts:
.....1............2...................5......................15
.....2...........15.................193....................3660
.....5..........193...............16714.................1877316
....15.........3660.............1877316..............1084539825
....52........81844...........222590953............634586561196
...202......1948672.........26670041125.........371815743708461
...855.....47436498.......3201911378187......217885196778717007
..3845...1163606279.....384557171168810...127683385189755792564
.18002..28617909415...46189600128813487.74824145653256981522691
.86472.704465305625.5547962760669962158
Some solutions for n=6 and k=4:
..0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0
..0..1..1..0....0..1..1..0....0..1..1..0....0..1..1..0....0..1..1..0
..0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0
..2..2..1..2....2..2..1..2....2..2..1..2....2..2..1..2....2..2..1..2
..2..2..3..2....0..3..1..2....3..0..0..3....2..0..1..0....0..3..4..4
..1..4..0..4....3..2..4..4....3..1..4..3....1..3..0..0....3..3..0..4
CROSSREFS
KEYWORD
AUTHOR
R. H. Hardin, Oct 26 2011
STATUS
approved