A160903 Square array read by antidiagonals: a(m,n) = the largest noncomposite <= m*n.

1, 2, 2, 3, 3, 3, 3, 5, 5, 3, 5, 7, 7, 7, 5, 5, 7, 11, 11, 7, 5, 7, 11, 13, 13, 13, 11, 7, 7, 13, 17, 19, 19, 17, 13, 7, 7, 13, 19, 23, 23, 23, 19, 13, 7, 7, 17, 23, 23, 29, 29, 23, 23, 17, 7, 11, 19, 23, 31, 31, 31, 31, 31, 23, 19, 11, 11, 19, 29, 31, 37, 41, 41, 37, 31, 29, 19, 11, 13

Offset

1,2

Links

Table of n, a(n) for n=1..79.

Crossrefs

Cf. A160902.

Sequence in context: A024695 A259195 A143997 * A124229 A355250 A055377

Adjacent sequences: A160900 A160901 A160902 * A160904 A160905 A160906

Keyword

nonn,tabl

Author

Leroy Quet, May 29 2009

Extensions

Extended by Ray Chandler, Jun 14 2009

Status

approved