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 A139549 Triangle read by rows: T(n,k) = if n>=2*k and n<2*k*A014963(k-1) then k else 1 T(n,0)=1. 1
 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 2, 3, 1, 1, 1, 1, 1, 2, 3, 1, 1, 1, 1, 1, 1, 1, 3, 4, 1, 1, 1, 1, 1, 1, 1, 3, 4, 1, 1, 1, 1, 1, 1, 1, 1, 3, 4, 5, 1, 1, 1, 1, 1, 1, 1, 1, 3, 4, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 3, 4, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 3, 4, 5, 1, 1, 1, 1, 1, 1, 1, 1 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 0,13 COMMENTS Row products give A139550. LINKS EXAMPLE Row products of the triangle are: 1 = 1 1*1 = 1 1*1*1 = 1 1*1*1*1 = 1 1*1*2*1*1 = 2 1*1*2*1*1*1 = 2 1*1*2*3*1*1*1 = 6 1*1*2*3*1*1*1*1 = 6 1*1*1*3*4*1*1*1*1 = 12 PROG (Excel) =if(and(row()-1>=(column()-1)*2; row()-1 < A014963(k-1)*(column()-1)*2); column()-1; 1) CROSSREFS Cf. A139550, A139547, A003418. Sequence in context: A275215 A304886 A295632 * A216915 A280569 A140345 Adjacent sequences:  A139546 A139547 A139548 * A139550 A139551 A139552 KEYWORD nonn,tabl AUTHOR Mats Granvik, Apr 27 2008 STATUS approved

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Last modified August 14 01:25 EDT 2020. Contains 336473 sequences. (Running on oeis4.)