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User:Jon Perry

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Studied Maths at Oxford University.

Some of my favourite sequences:

  • A211172 - A de-diagonalized Sudoku torus.
  • A215056 - Analysis of Minkowski 50-space zeroes.
  • A209245 - A 3d recurrence.
  • A209288 - A 4d recurrence.
  • A003121 - Ballot numbers, or dominated words.
  • A211347 - Sigma numbers.
  • A001845 - Centered octahedral numbers.
  • A214366 - Xylophone numbers.
  • A181482 - Variation of the triangular numbers.
  • A214832 - Piano key frequencies.
  • A216151 - A fast growing nested pair of sequences.
  • A217716 - Binomial word counter.
  • A216196 - A diagonalized Sukoku torus.
  • A224067 - The complex Collatz function z :-> 3iz + 1 + i.
  • A217757 - Product (i!+1).
  • A217716 - Product (binomial(n,k)+1)
  • A213172 - A 3 dimensional walk.
  • A002415 - 4 dimensional pyramidal numbers.
  • A220096 - An extension of Fermat's brain.
  • A066272 - Number of anti-divisors of n. (big cached site in link).
  • A011379 - Stable brick structures.
  • A225879 - Elastic numbers.
  • A080670 - Literal Factorization.
  • A230583 - Dirichlet's Divisor Sum Formula.
  • A231155 - n integers contain a summable subset divisible by n.
  • A234459 and A234460 - Complex factorials.
  • A033455 - Complex 5-plex.
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