A232977 - OEIS

%I #12 Jan 03 2021 16:55:45

%S 1,2,22,148,1126,6780,49020,290664,1945734,11786988,74564884,

%T 445398168,2767974620,16299877464,98372647992,577710929872,

%U 3417417696966,19822614160204,115774907274660,664999142005688,3833211645341172,21844173121980168,124494179613063496,703535711892561840,3974352552423163548

%N G.f.: Product_{k>=1} 1/(1-(4*x)^k)^(k/2).

%C Substitute 4x for x in g.f. mentioned in A232976.

%H Alois P. Heinz, <a href="/A232977/b232977.txt">Table of n, a(n) for n = 0..500</a>

%Y Cf. A232976/A046161, A000219.

%K nonn

%O 0,2

%A _N. J. A. Sloane_, Dec 07 2013