Jake Lai - cp's OEIS frontend

User: Jake Lai

Jake Lai has authored 2 sequences.

A233756 The n-th palindromic prime in base n.

5, 23, 17, 67, 43, 257, 113, 227, 191, 587, 277, 653, 647, 647, 947, 2081, 1697, 1619, 1283, 2083, 1873, 2719, 4159, 2729, 2551, 3947, 3083, 4703, 6577, 5927, 5669, 5813, 6737, 8231, 7673, 9293, 10267, 8819, 11527, 12799, 10169, 14369, 10301, 10039, 11597

Offset: 2

Jake Lai, Dec 27 2013

Chai Wah Wu, Table of n, a(n) for n = 2..10000

2nd diagonal of A230820.

A233756 := proc(n)
        A230820(n,n) ;
end proc:
seq(A233756(n),n=2..50) ; # R. J. Mathar, Feb 16 2014

A232092 Decimal expansion of the real root of x^2013 - x - 1 = 0.

Original entry on oeis.org

1, 0, 0, 0, 3, 4, 4, 4, 8, 0, 2, 8, 6, 3, 6, 3, 7, 6, 3, 9, 7, 2, 6, 9, 5, 8, 8, 6, 6, 1, 8, 5, 6, 0, 1, 8, 2, 2, 0, 9, 4, 8, 5, 9, 9, 8, 6, 8, 8, 7, 9, 4, 2, 2, 7, 2, 9, 2, 4, 5, 0, 7, 8, 8, 8, 9, 2, 5, 5, 8, 2, 2, 9, 7, 1, 7, 3, 1, 4, 0, 6, 2, 1, 2, 4, 3, 4, 5, 6, 3, 8, 9, 0, 3, 3, 3, 8, 7, 7, 6, 7, 1, 6, 0, 0, 9

Offset: 1

Jake Lai, Nov 18 2013

			1.00034448028636...

Digits:= 200:
fsolve((arcsinh@@2)(x^2013 -x -1));  # Alois P. Heinz, Nov 29 2013

FindRoot[-1 - x + x^2013 == 0, {x, 0.896226, 1.09623}, WorkingPrecision -> 15]

solve(x=0.896226, 1.09623, x^2013-x-1) \\ Michel Marcus, Nov 27 2013

Approximately 1 + (log 2)/2013. - Charles R Greathouse IV, Nov 27 2013

cp's OEIS Frontend

User: Jake Lai

A233756 The n-th palindromic prime in base n.

Views

Author

Keywords

Links

Crossrefs

Programs

Maple

A232092 Decimal expansion of the real root of x^2013 - x - 1 = 0.

Views

Author

Keywords

Examples

Programs

Maple

Mathematica

PARI

Formula