A343452 Numbers k such that A085942(k) = 0.
0, 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 200, 300, 400, 500, 600, 700, 800, 900, 1000, 1010, 1020, 1030, 1040, 1050, 1060, 1070, 1080, 1090, 1100, 1200, 1300, 1400, 1500, 1600, 1700, 1800, 1900, 2000, 2010, 2020, 2030, 2040, 2050, 2060, 2070, 2080, 2090
Offset: 1
Examples
A085942(1020) = 1*0 + 0*2 + 2*0 + 0*1 = 0, so 1020 belongs to this sequence. A085942(1021) = 1*1 + 0*2 + 2*0 + 1*1 = 2, so 1021 does not belong to this sequence.
Links
- Rémy Sigrist, Table of n, a(n) for n = 1..10000
Programs
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PARI
is(n) = { my (d=digits(n)); d*Colrev(d)==0 }
Comments