cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

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A296520 Multidigit primes in which the largest digit appears only once.

Original entry on oeis.org

13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 103, 107, 109, 113, 127, 131, 137, 139, 149, 151, 157, 163, 167, 173, 179, 181, 191, 193, 197, 211, 223, 227, 229, 239, 241, 251, 257, 263, 269, 271
Offset: 1

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Author

Zak Seidov, Dec 14 2017

Keywords

Examples

			In 13 the last digit is the largest, in 131 the middle digit and in 41 the first digit.
		

Crossrefs

A156666 is a subsequence (except that the single-digit primes are included).

Programs

  • Mathematica
    Reap[Do[p=Prime[k];id=IntegerDigits[p];If[Count[id,Max[id]]==1,Sow[p]],{k,6,100}]][[2,1]]
    (* Second program: *)
    Select[Prime@ Range[5, 60], Last@ Select[DigitCount[#], # > 0 &] == 1 &] (* Michael De Vlieger, Dec 14 2017 *)
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