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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A346458 Numbers with hexadecimal representation A, AB, ABC, ..., ABCDEFA, ABCDEFAB, ...

Original entry on oeis.org

10, 171, 2748, 43981, 703710, 11259375, 180150010, 2882400171, 46118402748, 737894443981, 11806311103710, 188900977659375, 3022415642550010, 48358650280800171, 773738404492802748, 12379814471884843981, 198077031550157503710, 3169232504802520059375
Offset: 1

Views

Author

Peter Andrew, Jul 19 2021

Keywords

Crossrefs

Cf. A325911.

Programs

  • Haskell
    a 1 = 10
    a n = a (n - 1) * 16 + 10 + (n - 1) `mod` 6

Formula

a(n) = 16*a(n-1) + 10 + ((n - 1) mod 6) with a(1) = 10.
From Stefano Spezia, Jul 19 2021: (Start)
G.f.: x*(10 + 11*x + 12*x^2 + 13*x^3 + 14*x^4 + 15*x^5)/(1 - 16*x - x^6 + 16*x^7).
a(n) = 16*a(n-1) + a(n-6) - 16*a(n-7) for n > 7. (End)
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