cp's OEIS Frontend

A357121 Irregular triangle T(n, k), n > 0, k = 1..A352104(n); the n-th row contains, in ascending order, the terms in the lazy tribonacci representation of n.

%I A357121 #10 Sep 14 2022 08:26:21
%S A357121 1,2,1,2,4,1,4,2,4,1,2,4,1,7,2,7,1,2,7,4,7,1,4,7,2,4,7,1,2,4,7,2,13,1,
%T A357121 2,13,4,13,1,4,13,2,4,13,1,2,4,13,1,7,13,2,7,13,1,2,7,13,4,7,13,1,4,7,
%U A357121 13,2,4,7,13,1,2,4,7,13,4,24,1,4,24,2,4,24
%N A357121 Irregular triangle T(n, k), n > 0, k = 1..A352104(n); the n-th row contains, in ascending order, the terms in the lazy tribonacci representation of n.
%C A357121 See A357120 for the sequence corresponding to greedy tribonacci representations.
%H A357121 Rémy Sigrist, <a href="/A357121/a357121.gp.txt">PARI program</a>
%H A357121 <a href="/index/Z#Zeckendorf">Index entries for sequences related to Zeckendorf expansion of n</a>
%F A357121 T(n, 1) = 2^A080843(n-1).
%e A357121 Triangle T(n, k) begins:
%e A357121      1: [1]
%e A357121      2: [2]
%e A357121      3: [1, 2]
%e A357121      4: [4]
%e A357121      5: [1, 4]
%e A357121      6: [2, 4]
%e A357121      7: [1, 2, 4]
%e A357121      8: [1, 7]
%e A357121      9: [2, 7]
%e A357121     10: [1, 2, 7]
%e A357121     11: [4, 7]
%e A357121     12: [1, 4, 7]
%e A357121     13: [2, 4, 7]
%e A357121     14: [1, 2, 4, 7]
%e A357121     15: [2, 13]
%o A357121 (PARI) See Links section.
%Y A357121 Cf. A000073, A080843, A112309, A352103, A352104, A357120.
%K A357121 nonn,tabf
%O A357121 1,2
%A A357121 _Rémy Sigrist_, Sep 12 2022