OFFSET
1,2
COMMENTS
Table starts
..1....2.....3......4........6.........9.........13...........19............28
..2....7....13.....28.......69.......149........330..........755..........1681
..3...13....30.....91......280.......785.......2319.........6816.........19796
..4...28....91....366.....1644......6545......26865.......112345........461363
..6...69...280...1644....10703.....58506.....341979......2028843......11696474
..9..149...785...6545....58506....437195....3547681.....28921472.....229650211
.13..330..2319..26865...341979...3547681...40196846....459874052....5101988967
.19..755..6816.112345..2028843..28921472..459874052...7361110427..113693158171
.28.1681.19796.461363.11696474.229650211.5101988967.113693158171.2440444635515
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..264
FORMULA
Empirical for column k:
k=1: a(n) = a(n-1) +a(n-3)
k=2: a(n) = a(n-1) +a(n-2) +4*a(n-3)
k=3: [order 10]
k=4: [order 21]
k=5: [order 55]
EXAMPLE
Some solutions for n=5 k=4
..1..0..0..1. .0..1..0..1. .0..0..1..0. .1..1..0..1. .1..1..0..1
..0..1..1..0. .0..1..0..1. .0..1..0..0. .0..0..0..1. .0..0..0..1
..0..1..1..0. .0..0..0..0. .0..0..0..0. .0..0..0..0. .0..0..0..0
..0..0..1..0. .0..0..0..1. .0..1..0..0. .1..0..1..0. .0..0..0..1
..0..1..0..1. .1..1..0..1. .1..0..0..0. .1..0..0..1. .0..0..0..1
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Dec 02 2017
STATUS
approved