OFFSET
3,2
LINKS
Alois P. Heinz, Table of n, a(n) for n = 3..1000
Index entries for linear recurrences with constant coefficients, signature (4,-2,-2,6,-17,-16,-30,6,32,48,12,-16,-16,-9,2,-2,-2,2,1).
FORMULA
EXAMPLE
a(4) = 10: 2341, 2431, 3241, 3421, 4123, 4132, 4213, 4231, 4312, 4321.
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Alois P. Heinz, Jan 28 2019
STATUS
approved