OFFSET

1,2

COMMENTS

FORMULA

T(n,k) = d(n)*k.

EXAMPLE

First few rows of the triangle =

1;

2, 4;

2, 4, 6;

3, 6, 9, 12;

2, 4, 6, 8, 10;

4, 8, 12, 16, 20, 24;

2, 4, 6, 8, 10, 12, 14;

...

T(5,3) = 6 = 2*3 = d(5)*3.

PROG

(PARI) tabl(nn) = for (n=1, nn, for (k=1, n, print1(numdiv(n)*k, ", "))); \\ Michel Marcus, Jun 05 2023

CROSSREFS

KEYWORD

nonn,tabl

AUTHOR

Gary W. Adamson, Aug 03 2008

EXTENSIONS

a(62) corrected by Georg Fischer, Jun 05 2023

STATUS

approved