A109042 Table read by antidiagonals: T(n,m) = lcm(n,m) (n >= 0, m >= 0).

0, 0, 0, 0, 1, 0, 0, 2, 2, 0, 0, 3, 2, 3, 0, 0, 4, 6, 6, 4, 0, 0, 5, 4, 3, 4, 5, 0, 0, 6, 10, 12, 12, 10, 6, 0, 0, 7, 6, 15, 4, 15, 6, 7, 0, 0, 8, 14, 6, 20, 20, 6, 14, 8, 0, 0, 9, 8, 21, 12, 5, 12, 21, 8, 9, 0, 0, 10, 18, 24, 28, 30, 30, 28, 24, 18, 10, 0, 0, 11, 10, 9, 8, 35, 6, 35, 8, 9, 10, 11, 0

Offset

0,8

Links

Alois P. Heinz, Antidiagonals n = 0..140, flattened

Formula

lcm(n, m) = n*m/gcd(n, m).

Crossrefs

Rows A000027, A109043, A109044, A109045, A109046, A109047, A109048, A109049, A109050, A109051, A109052, A109053.

A003990 is (1, 1) based.

Sequence in context: A323473 A341288 A325820 * A322403 A128540 A160692

Adjacent sequences: A109039 A109040 A109041 * A109043 A109044 A109045

Keyword

nonn,easy,tabl

Author

Mitch Harris, Jun 18 2005

Status

approved