OFFSET
1,2
COMMENTS
For the connection with paths in the divisor graph of {1,...,n} see the comment in A339492.
EXAMPLE
The triangle starts:
[1] 1;
[2] 2, 2;
[3] 6, 2, 3;
[4] 24, 8, 3, 8;
[5] 120, 8, 3, 8, 5;
[6] 720, 48, 18, 8, 5, 36;
[7] 5040, 48, 18, 8, 5, 36, 7;
[8] 40320, 384, 18, 64, 5, 36, 7, 64;
[9] 362880, 384, 162, 64, 5, 36, 7, 64, 27;
[10] 3628800, 3840, 162, 64, 50, 36, 7, 64, 27, 100;
MAPLE
t := (n, k) -> NumberTheory:-Divisors(k) union {seq(k*j, j=2..n/k)}:
T := (n, k) -> mul(j, j = t(n, k)):
for n from 1 to 10 do seq(T(n, k), k=1..n) od;
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Peter Luschny, Dec 31 2020
STATUS
approved