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A hierarchical sequence (W3{2,2}c - see A059126).
1

%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