1,2

Except for the first column, the n:th prime number appears at every A006093:th row, beginning at the A000040:th row in the n:th column.

T(n,k) = if mod(A027642;A000040)=0 then A000040 else 1.

Row products of the first few rows are:

1 = 1

2*1 = 2

2*3*1 = 6

1*1*1*1 = 1

2*3*5*1*1 = 30

1*1*1*1*1*1 = 1

2*3*1*7*1*1*1 = 42

1*1*1*1*1*1*1*1 = 1

2*3*5*1*1*1*1*1*1 = 30

Cf. A027642, A006093.

Sequence in context: A094646 A124448 A143343 this_sequence A131796 A131797 A145727

Adjacent sequences: A138240 A138241 A138242 this_sequence A138244 A138245 A138246

nonn,tabl

Mats O. Granvik (mgranvik(AT)abo.fi), Mar 08 2008