OFFSET
0,3
LINKS
G. Helms, Number array not found in OEIS, SeqFan list Aug 27 2011
FORMULA
EXAMPLE
The triangle starts in row n=0 as
1;
1, 3;
1, 7, 43;
1, 15, 211, 2619;
1, 31, 931, 26251, 654811;
MAPLE
A194583 := proc(n, k) option remember; if n=0 or k=0 then 1; elif k> n then
return procname(k, n); else (2^(n+1)-2^k)*procname(n, k-1)+procname(n+1, k-1) ; end if;
end proc:
MATHEMATICA
t[_, 0] = 1; t[n_, k_] := t[n, k] = (2^(n+1)-2^k)*t[n, k-1]+t[n+1, k-1]; Table[t[n, k], {n, 0, 8}, {k, 0, n}] // Flatten (* Jean-François Alcover, Jan 10 2014 *)
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. J. Mathar, Aug 29 2011
STATUS
approved