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A295510
The numerators of the fractions in the Schinzel-Sierpiński tree A295511, read across levels. Also an encoding of Stern's diatomic series A002487.
3
2, 2, 3, 3, 7, 5, 7, 2, 17, 7, 11, 5, 11, 13, 5, 3, 241, 17, 29, 7, 17, 31, 43, 13, 43, 11, 17, 13, 29, 193, 11, 2, 13, 11, 37, 73, 67, 29, 41, 7, 23, 97, 79, 31, 73, 29, 19, 5, 37, 43, 73, 31, 157, 17, 23, 13, 41, 43, 199, 17, 19, 11, 7
OFFSET
1,1
EXAMPLE
The triangle (row lengths are 2^(n-1)) starts:
1: 2
2: 2, 3
3: 3, 7, 5, 7
4: 2, 17, 7, 11, 5, 11, 13, 5
5: 3, 241, 17, 29, 7, 17, 31, 43, 13, 43, 11, 17, 13, 29, 193, 11
PROG
(Sage) # uses[SSETree from A295511]
def A295510_row(n):
if n == 1: return [2]
return [r.numerator() for r in SSETree(n)]
for n in (1..6): print(A295510_row(n))
CROSSREFS
KEYWORD
nonn,tabf
AUTHOR
Peter Luschny, Nov 23 2017
STATUS
approved