A317647 The even members of the "Almost natural numbers" (A007376).
2, 4, 6, 8, 0, 2, 4, 6, 8, 2, 0, 2, 2, 2, 2, 2, 4, 2, 2, 6, 2, 2, 8, 2, 0, 2, 4, 6, 8, 4, 0, 4, 4, 2, 4, 4, 4, 4, 4, 6, 4, 4, 8, 4, 0, 2, 4, 6, 8, 6, 0, 6, 6, 2, 6, 6, 4, 6, 6, 6, 6, 6, 8, 6, 0, 2, 4, 6, 8, 8, 0, 8, 8, 2, 8, 8, 4, 8, 8, 6, 8, 8, 8, 8, 0, 2, 4, 6, 8, 0, 0
Offset: 1
Examples
The initial (15) terms of A007376 are 1,2,3,4,5,6,7,8,9,1,0,1,1,1,2; omitting the odd terms 1,3,5,7,9,1,1,1 leaves the first 6 even terms 2,4,6,8,0,2: a(1) through a(6).
Programs
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Mathematica
Select[ Flatten[ IntegerDigits /@ Range@ 100], EvenQ]
Comments