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 A046216 First denominator and then numerator of 1/2-Pascal triangle (by row), excluding 1's. 0
 2, 2, 3, 2, 3, 2, 5, 3, 2, 5, 2, 7, 2, 11, 2, 11, 2, 7, 2, 9, 9, 11, 9, 2, 9, 2, 11, 2, 27, 20, 20, 2, 27, 2, 11, 2, 13, 19, 2, 67, 40, 2, 67, 19, 2, 13, 2, 15, 2, 51, 2, 105, 2, 147, 2, 147, 2, 105, 2, 51, 2, 15, 2, 17, 33, 78, 126, 147, 126, 78, 33, 2, 17, 2 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS EXAMPLE 1/1; --> 1/1 1/1; --> 1/1 1/2 1/1; --> 2 1/1 3/2 3/2 1/1; --> 2 3 2 3 1/1 5/2 3/1 5/2 1/1;  --> ... 1/1 7/2 11/2 11/2 7/2 1/1; 1/1 9/2 9/1 11/1 9/1 9/2 1/1; 1/1 11/2 27/2 20/1 20/1 27/2 11/2 1/1; ... CROSSREFS Cf. A046213. Sequence in context: A235922 A255598 A060324 * A105560 A331597 A339502 Adjacent sequences:  A046213 A046214 A046215 * A046217 A046218 A046219 KEYWORD tabf,nonn,frac,less AUTHOR EXTENSIONS More terms from Sean A. Irvine, Apr 07 2021 STATUS approved

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Last modified June 18 04:41 EDT 2021. Contains 345098 sequences. (Running on oeis4.)