A033828 Numbers that can be expressed as the product of two 2-digit numbers in at least one way.

100, 110, 120, 121, 130, 132, 140, 143, 144, 150, 154, 156, 160, 165, 168, 169, 170, 176, 180, 182, 187, 190, 192, 195, 196, 198, 200, 204, 208, 209, 210, 216, 220, 221, 224, 225, 228, 230, 231, 234, 238, 240, 242, 247, 250, 252, 253, 255, 256, 260, 264, 266

Offset: 1

Author

Jeff Burch

Keywords

• nonn
• fini
• full

Comments

Last term is 9801 = 99*99.

There are 2,621 terms in the sequence, all of which are in the b-file. - Harvey P. Dale, Jun 14 2017

Links

• Harvey P. Dale, Table of n, a(n) for n = 1..2621

Programs

Mathematica

Times@@@Tuples[Range[10,99],2]//Union (* Harvey P. Dale, Jun 14 2017 *)

Extensions

More terms from Harvey P. Dale, Jun 14 2017