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 A231349 Number of triangles added at n-th stage to the structure of A231348. 4
 1, 2, 4, 4, 4, 8, 10, 8, 4, 8, 12, 16, 10, 20, 22, 16, 4, 8, 12, 16, 12, 24, 28, 32, 10, 20, 28, 40, 22, 44, 46, 32, 4, 8, 12, 16, 12, 24, 28, 32, 12, 24, 32, 48, 28, 56, 60, 64, 10, 20, 28, 40, 28, 56, 64, 80, 22, 44, 60, 88, 46, 92, 94, 64 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS First differences of A231348. Observation: the row sums of the first seven rows coincide with the first seven elements of A199923. Is A199923 the row sums of this triangle? LINKS N. J. A. Sloane, Catalog of Toothpick and Cellular Automata Sequences in the OEIS EXAMPLE Written as an irregular triangle in which row lengths is A011782 the sequence begins: 1; 2; 4,4; 4,8,10,8; 4,8,12,16,10,20,22,16; 4,8,12,16,12,24,28,32,10,20,28,40,22,44,46,32; 4,8,12,16,12,24,28,32,12,24,32,48,28,56,60,64,10,20,28,40, 28,56,64,80,22,44,60,88,46,92,94,64; CROSSREFS Right border gives A000079. Cf. A001316, A011782, A231348. Sequence in context: A076340 A076345 A327331 * A170893 A194445 A220525 Adjacent sequences: A231346 A231347 A231348 * A231350 A231351 A231352 KEYWORD nonn,tabf AUTHOR Omar E. Pol, Dec 15 2013 STATUS approved

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Last modified December 9 07:17 EST 2022. Contains 358700 sequences. (Running on oeis4.)