%I #13 Sep 13 2022 09:35:13
%S 4,10,4,16,22,16,4,10,4,28,34,28,4,10,4,16,22,16,4,10,4,40,46,40,4,10,
%T 4,16,22,16,4,10,4,28,34,28,4,10,4,16,22,16,4,10,4,52,58,52,4,10,4,16,
%U 22,16,4,10,4,28,34,28,4,10,4,16,22,16,4,10,4,40,46,40,4,10,4,16,22,16
%N A hierarchical sequence (W3{2,2}c - see A059126).
%H Jonas Wallgren, <a href="/A059126/a059126.txt">Hierarchical sequences</a>
%F a(n) = A059128(3*n) + A059128(3*n+1) + A059128(3*n+2). - _Sean A. Irvine_, Sep 12 2022
%Y Cf. A059126, A059128.
%K easy,nonn
%O 0,1
%A _Jonas Wallgren_, Jan 19 2001