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Number of planar polyhexes (A000228) with at most n cells.
1

%I #7 Jan 10 2023 05:07:37

%S 1,2,5,12,34,116,449,1897,8469,38959,182511,865612,4140438,19937335,

%T 96519210,469387311,2291623939,11226534301,55165698564,271816734576,

%U 1342610043518

%N Number of planar polyhexes (A000228) with at most n cells.

%C Partial sums of A000228.

%Y Partial sums of A000228.

%K nonn

%O 1,2

%A _Tanya Khovanova_, Jul 26 2007

%E Offset corrected by _John Mason_, Jan 10 2023