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A308180
Main diagonal of triangle defined in A308178.
4
0, 3, 5, 2, 1, 6, 7, 11, 4, 12, 18, 14, 13, 8, 17, 9, 22, 23, 25, 29, 10, 28, 19, 30, 38, 31, 39, 15, 47, 24, 16, 40, 34, 42, 50, 51, 41, 44, 46, 49, 58, 55, 45, 21, 66, 69, 20, 56, 65, 60, 73, 67, 77, 57, 78, 63, 79, 70, 26, 27, 85, 87, 93, 76, 82, 89, 71
OFFSET
0,2
COMMENTS
Theorem: This is a permutation of the nonnegative integers. [The proof is analogous to that for A286295.]
Conjecture: There is a unique fixed point at n=0, and the positive integers form one "cycle", namely (... 59 27 15 9 12 13 8 4 1 3 2 5 6 7 11 14 17 23 30 16 22 19 29 24 38 ...).
LINKS
CROSSREFS
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, May 28 2019
EXTENSIONS
More terms from Rémy Sigrist, May 29 2019
STATUS
approved