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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A008973 Fibonacci number F(n) to power F(n).

Original entry on oeis.org

1, 1, 1, 4, 27, 3125, 16777216, 302875106592253, 5842587018385982521381124421, 11756638905368616011414050501310355554617941909569536, 524744532468751923546122657597368049278513737089035272057324643668607677682302892208099365234375
Offset: 0

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Author

Keywords

Crossrefs

Programs

Formula

a(n) = A000045(n)^A000045(n).
a(n) = A000312(A000045(n)).

A250486 A(n,k) is the n^k-th Fibonacci number; square array A(n,k), n>=0, k>=0, read by antidiagonals.

Original entry on oeis.org

1, 0, 1, 0, 1, 1, 0, 1, 1, 1, 0, 1, 3, 2, 1, 0, 1, 21, 34, 3, 1, 0, 1, 987, 196418, 987, 5, 1, 0, 1, 2178309, 37889062373143906, 10610209857723, 75025, 8, 1
Offset: 0

Views

Author

Alois P. Heinz, Nov 24 2014

Keywords

Examples

			Square array A(n,k) begins:
  1,  0,  0,      0,       0,    0,  0,  0,   ...
  1,  1,  1,      1,       1,    1,  1,  1,   ...
  1,  1,  3,      21,      987,  2178309,     ...
  1,  2,  34,     196418,  37889062373143906, ...
  1,  3,  987,    10610209857723,             ...
  1,  5,  75025,  59425114757512643212875125, ...
  1,  8,  14930352,                           ...
  1,  13, 7778742049,                         ...
		

Crossrefs

Main diagonal gives A250495.
Cf. A000045.

Programs

  • Maple
    A:= (n, k)-> (<<0|1>, <1|1>>^(n^k))[1, 2]:
    seq(seq(A(n, d-n), n=0..d), d=0..8);
  • Mathematica
    A[n_, k_] := MatrixPower[{{0, 1}, {1, 1}}, n^k][[1, 2]]; A[0, 0] = 1;
    Table[A[n, d-n], {d, 0, 8}, {n, 0, d}] // Flatten (* Jean-François Alcover, May 28 2019, from Maple *)

Formula

A(n,k) = [0, 1; 1, 1]^(n^k)[1,2].
Showing 1-2 of 2 results.