A270263 Integers divisible by the last row of their "upside-down" triangle (see comments).

10, 12, 20, 21, 23, 24, 30, 32, 34, 36, 40, 42, 43, 45, 46, 48, 50, 54, 56, 60, 63, 64, 65, 67, 68, 69, 70, 76, 78, 80, 84, 86, 87, 89, 90, 96, 98, 100, 102, 110, 112, 114, 120, 122, 124, 126, 130, 132, 134, 136, 138, 140, 142, 144, 146, 148, 150, 152, 156, 158, 160, 162, 168, 170, 172, 174, 180, 182, 190, 192, 200, 201, 203, 204, 211, 213, 214, 216, 220, 221, 223, 224, 225, 228, 230, 231, 233, 235, 236, 237, 240, 241, 243, 244, 245, 247, 248, 249, 250, 251

Offset: 1

Author

Eric Angelini and Lars Blomberg, Mar 14 2016

Keywords

• nonn
• base

Comments

2.0.1.4 2.0.1.5 2.0.1.6 2.2.1.6

.2.1.3 2.1.4 2.1.5 0.1.5

..1.2 1.3 1.4 1.4

...1 2 3 3

A digit "d" of such an "upside-down" triangle is the result of the absolute digit-differences of the two digits above "d". The last row has one digit. If this digit divides the top row integer, we have a hit. No hit here for 2015 (as 2 doesn't divide 2015) and no hit for 2216 (as 3 doesn't divide 2216), but two hits for 2014 and 2016. No division by zero is accepted. Leading zeros below the first row must be kept if they arise.

Crossrefs

This is not A048378.