OFFSET
0,4
FORMULA
T(0,k) = A002450(k). T(n,k) = T(n-1,k+1) - T(n-1,k), n > 0.
EXAMPLE
MAPLE
A002450 := proc(n) (4^n-1)/3 ; end proc:
A166976 := proc(n, k) option remember; if n = 0 then A002450(k) else procname(n-1, k+1)-procname(n-1, k) ; end if; end proc: # R. J. Mathar, Jul 02 2011
CROSSREFS
KEYWORD
AUTHOR
Paul Curtz, Oct 26 2009
STATUS
approved