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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.
2
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, 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, 13, 2, 4, 7, 13, 1, 2, 4, 7, 13, 4, 24, 1, 4, 24, 2, 4, 24
OFFSET
1,2
COMMENTS
See A357120 for the sequence corresponding to greedy tribonacci representations.
FORMULA
T(n, 1) = 2^A080843(n-1).
EXAMPLE
Triangle T(n, k) begins:
1: [1]
2: [2]
3: [1, 2]
4: [4]
5: [1, 4]
6: [2, 4]
7: [1, 2, 4]
8: [1, 7]
9: [2, 7]
10: [1, 2, 7]
11: [4, 7]
12: [1, 4, 7]
13: [2, 4, 7]
14: [1, 2, 4, 7]
15: [2, 13]
PROG
(PARI) See Links section.
CROSSREFS
KEYWORD
nonn,tabf
AUTHOR
Rémy Sigrist, Sep 12 2022
STATUS
approved