A205718 Positions of multiples of 10 in A204890 (differences of primes).
12, 19, 30, 34, 44, 50, 59, 62, 71, 77, 80, 84, 87, 95, 98, 103, 107, 111, 114, 119, 128, 130, 141, 147, 149, 157, 160, 165, 168, 176, 182, 184, 189, 192, 196, 199, 204, 206, 218, 220, 227, 233, 237, 240, 245, 247, 252, 261, 263, 270, 275, 280, 283
Offset: 1
Keywords
Examples
In A204890=(1,3,2,5,4,2,9,8,6,4,11,10,8,...), multiples of 10 are in positions 12,19,30,... See the example at A205720.
Links
- Harvey P. Dale, Table of n, a(n) for n = 1..1000
Programs
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Mathematica
(See the program at A205720.) Position[With[{prs=Prime[Range[30]]},Flatten[Table[prs[[n]]-Take[prs,n-1],{n,2,Length[prs]}]]],?(Divisible[#,10]&)]//Flatten (* _Harvey P. Dale, Jan 15 2022 *)
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