OFFSET
0,3
LINKS
Seiichi Manyama, Table of n, a(n) for n = 0..6271
Index entries for linear recurrences with constant coefficients, signature (1,2,1,1,-10,-2,-4,12,24,-24).
FORMULA
a(n) = a(n-1) + 2*a(n-2) + a(n-3) + a(n-4) - 10*a(n-5) - 2*a(n-6) - 4*a(n-7) + 12*a(n-8) + 24*a(n-9) - 24*a(n-10) for n >= 11. - Muniru A Asiru, Sep 07 2017
PROG
(PARI) Vec(1/((1-x)*(1-2*x^2)*(1-3*x^3)*(1-4*x^4)) + O(x^100))
(GAP)
a:=[1, 1, 3, 6, 14, 20, 45, 69, 135, 210];;
for n in [11..10^2] do a[n]:=a[n-1]+2*a[n-2]+a[n-3]+a[n-4]-10*a[n-5]-2*a[n-6]-4*a[n-7]+12*a[n-8]+24*a[n-9]-24*a[n-10]; od; a; # Muniru A Asiru, Sep 07 2017
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Seiichi Manyama, Sep 07 2017
STATUS
approved