A081998 Square array read by antidiagonals, alternating upwards and downwards: T(i, j) is the least number that is greater than the previous term and coprime to every number on the same row or column.

1, 2, 3, 4, 5, 7, 9, 11, 13, 17, 19, 21, 23, 26, 29, 31, 37, 41, 43, 47, 49, 53, 59, 60, 61, 63, 67, 71, 73, 79, 83, 88, 89, 97, 101, 103, 107, 109, 113, 115, 127, 131, 137, 139, 143, 149, 151, 155, 157, 161, 163, 167, 169, 173, 179, 181, 187, 191, 193, 197, 198, 199

Offset

0,2

Comments

Is the sequence related to A067126? This should exhibit some number-theoretic properties.

Links

Charlie Neder, Table of n, a(n) for n = 0..10010

Example

Array begins:
   1,  2,  7,  9, ...
   3,  5, 11, ...
   4, 13, ...
  17, ...
  ...

Crossrefs

Cf. A081999, A082000, A082001.

Sequence in context: A089651 A063487 A253063 * A325266 A284288 A343983

Adjacent sequences: A081995 A081996 A081997 * A081999 A082000 A082001

Keyword

nonn,tabl

Author

Amarnath Murthy, Apr 05 2003

Extensions

More terms from David Wasserman, Jul 28 2004

Status

approved