OFFSET
3,3
COMMENTS
With offset 6 number of compositions of n, where the difference between the number of odd parts and the number of even parts is -3.
LINKS
Alois P. Heinz, Table of n, a(n) for n = 3..1000
FORMULA
Recurrence (for n>=7): (n-3)*(n-2)*(n-1)*(n+6)*(16*n^4 - 64*n^3 + 56*n^2 + 16*n - 1311)*a(n) = -288*(n-4)*(n-2)*n*(n+5)*(2*n-3)*a(n-1) + 2*(n-1)*(16*n^7 - 64*n^6 + 136*n^5 - 1048*n^4 + 1621*n^3 + 1202*n^2 - 9162*n + 7866)*a(n-2) + 2*(n-2)*n*(2*n-3)*(16*n^5 - 32*n^4 - 48*n^3 + 212*n^2 - 1429*n + 2145)*a(n-3) - (n-4)*(n-1)^2*n*(16*n^4 - 40*n^2 - 1287)*a(n-4). - Vaclav Kotesovec, May 20 2014
CROSSREFS
KEYWORD
nonn
AUTHOR
Alois P. Heinz, May 16 2014
STATUS
approved