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A165661
Triangle read by rows: denominator of n/binomial(n,m).
2
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 3, 1, 1, 1, 1, 2, 2, 1, 1, 1, 1, 5, 10, 5, 1, 1, 1, 1, 3, 5, 5, 3, 1, 1, 1, 1, 7, 7, 35, 7, 7, 1, 1, 1, 1, 4, 28, 14, 14, 28, 4, 1, 1, 1, 1, 9, 12, 21, 126, 21, 12, 9, 1, 1, 1, 1, 5, 15, 30, 42, 42, 30, 15, 5, 1, 1, 1, 1, 11, 55, 165, 66, 77, 66, 165, 55, 11, 1, 1
OFFSET
0,13
COMMENTS
First difference from A107711 is at T(10,4) = 21 instead of 42.
FORMULA
T(n,m) = binomial(n,m)/gcd(n,binomial(n,m)).
CROSSREFS
Cf. A159335 (numerators), A107711, A007318, A109004.
Sequence in context: A143811 A109673 A023591 * A107711 A242345 A179067
KEYWORD
frac,nonn,tabl
AUTHOR
STATUS
approved