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.

Previous Showing 11-20 of 20 results.

A134896 Ceiling(n*exp(cot n)).

Original entry on oeis.org

2, 2, 1, 10, 4, 1, 23, 7, 1, 47, 11, 3, 113, 17, 5, 446, 23, 8, 13922, 32, 11, 254720877109456038162413915231807280097784507656381, 44, 16, 1, 61, 20, 1, 90, 26, 4, 146, 33, 7, 289, 41, 12, 954, 52, 17, 20703, 65, 23, 149056697284764410227539532, 84, 29, 1, 111, 36, 2
Offset: 1

Views

Author

Mohammad K. Azarian, Nov 14 2007

Keywords

Comments

Searching up to 200000000, records at 1, 4, 7, 10, 13, 16, 19, 22, 355, 104348, 312689, 1146408, 5419351, 85563208, 165707065, .... - Robert G. Wilson v, Feb 10 2013

Crossrefs

Programs

  • Mathematica
    Table[Ceiling[n Exp[Cot[n]]], {n, 50}] (* Vincenzo Librandi, Feb 08 2013 *)

A134907 a(n) = floor(n*exp(-tan(n))).

Original entry on oeis.org

0, 17, 3, 1, 146, 8, 2, 7180, 14, 5, 1481148085628412373142705746959543003289563510386989143402672337886302490562710486232930994662688987, 22, 8, 0, 35, 11, 0, 56, 16, 2, 96, 21, 4, 202, 28, 7
Offset: 1

Views

Author

Mohammad K. Azarian, Nov 14 2007

Keywords

Crossrefs

Programs

  • Mathematica
    Table[Floor[n Exp[-Tan[n]]], {n, 30}] (* Vincenzo Librandi, Feb 18 2013 *)

Extensions

Offset corrected by Mohammad K. Azarian, Nov 19 2008
a(11) corrected by Vincenzo Librandi, Feb 18 2013

A134897 Floor(n*exp(cot n)).

Original entry on oeis.org

1, 1, 0, 9, 3, 0, 22, 6, 0, 46, 10, 2, 112, 16, 4, 445, 22, 7, 13921, 31, 10, 254720877109456038162413915231807280097784507656380, 43, 15, 0, 60, 19, 0, 89, 25, 3, 145, 32, 6, 288, 40, 11, 953, 51, 16, 20702, 64, 22
Offset: 1

Views

Author

Mohammad K. Azarian, Nov 14 2007

Keywords

Crossrefs

Programs

A134908 Ceiling(n*exp(-cot(n))).

Original entry on oeis.org

1, 4, 3341, 2, 7, 187, 3, 10, 83, 3, 12, 58, 2, 13, 49, 1, 13, 44, 1, 13, 41, 1, 13, 39, 44714, 12, 37, 978, 10, 36, 299, 8, 34, 170, 5, 32, 122, 2, 30, 98, 1, 28, 84, 1, 25, 75, 144423, 21, 68, 1978, 17, 62, 539, 13, 57, 288, 8, 52
Offset: 1

Views

Author

Mohammad K. Azarian, Nov 14 2007

Keywords

Crossrefs

Programs

  • Magma
    [Ceiling(n*Exp(-Cot(n))): n in [1..60]]; // Vincenzo Librandi, Feb 18 2013
  • Mathematica
    Table[Ceiling[n Exp[-Cot[n]]], {n, 70}] (* Vincenzo Librandi, Feb 18 2013 *)

A134898 Ceiling(n*exp(sec n)).

Original entry on oeis.org

7, 1, 2, 1, 170, 18, 27, 1, 4, 4, 1484429287810386706180357941514616918998247619752106278380016249467303567341589522908388755572386424, 40, 40, 21002, 5, 6, 1, 82, 53, 232, 4, 9, 4, 254, 69, 122, 1, 10, 8, 19617, 93, 107, 1, 11, 12, 1, 137, 109, 1659, 9
Offset: 1

Views

Author

Mohammad K. Azarian, Nov 14 2007

Keywords

Crossrefs

Programs

  • Mathematica
    Table[Ceiling[n Exp[Sec[n]]], {n, 30}] (* Vincenzo Librandi, Feb 08 2013 *)

Extensions

Corrected by Vincenzo Librandi, Feb 08 2013

A134899 Floor(n*exp(sec(n))).

Original entry on oeis.org

6, 0, 1, 0, 169, 17, 26, 0, 3, 3, 1484429287810386706180357941514616918998247619752106278380016249467303567341589522908388755572386423, 39, 39, 21001, 4, 5, 0, 81, 52, 231, 3, 8, 3, 253, 68, 121, 0, 9, 7, 19616, 92, 106, 0, 10, 11, 0, 136, 108, 1658, 8, 14
Offset: 1

Views

Author

Mohammad K. Azarian, Nov 14 2007

Keywords

Crossrefs

Programs

  • Mathematica
    Table[Floor[n Exp[Sec[n]]], {n, 60}] (* Harvey P. Dale, Jan 15 2013 *)

Extensions

Corrected and extended by Harvey P. Dale, Jan 15 2013

A134900 a(n) = ceiling(n*exp(csc(n))).

Original entry on oeis.org

4, 7, 3586, 2, 2, 1, 33, 22, 102, 2, 5, 2, 141, 39, 70, 1, 7, 5, 15012, 60, 70, 1, 8, 8, 1, 97, 77, 1123, 7, 11, 3, 197, 90, 226, 4, 14, 8, 1110, 111, 154, 1, 15, 13, 150381952598940947400633734, 146, 140, 153664, 14, 18, 2, 227
Offset: 1

Views

Author

Mohammad K. Azarian, Nov 14 2007

Keywords

Crossrefs

Programs

  • Magma
    [Ceiling(n*Exp(Cosec(n))): n in [1..60]]; // Vincenzo Librandi, Feb 18 2013
  • Mathematica
    Table[Ceiling[n Exp[Csc[n]]], {n, 60}] (* Vincenzo Librandi, Feb 18 2013 *)

A134881 Decimal expansion of Sum_{k>=1} 1/(e^k)^(e^k).

Original entry on oeis.org

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

Views

Author

Artur Jasinski, Nov 14 2007

Keywords

Examples

			0.06598841774334379175656238672410779743814443934121...
		

Crossrefs

Programs

  • Mathematica
    RealDigits[N[Sum[1/(E^n)^(E^n), {n, 1, 20}], 200]][[1]] (* first two zeros removed *)

A134901 a(n) = floor(n*exp(csc(n))).

Original entry on oeis.org

3, 6, 3585, 1, 1, 0, 32, 21, 101, 1, 4, 1, 140, 38, 69, 0, 6, 4, 15011, 59, 69, 0, 7, 7, 0, 96, 76, 1122, 6, 10, 2, 196, 89, 225, 3, 13, 7, 1109, 110, 153, 0, 14, 12, 150381952598940947400633733, 145, 139, 153663, 13, 17, 1, 226
Offset: 1

Views

Author

Mohammad K. Azarian, Nov 14 2007

Keywords

Crossrefs

Programs

A138384 Reverse groups of five Fibonacci numbers.

Original entry on oeis.org

3, 2, 1, 1, 0, 34, 21, 13, 8, 5, 377, 233, 144, 89, 55, 4181, 2584, 1597, 987, 610, 46368, 28657, 17711, 10946, 6765, 514229, 317811, 196418, 121393, 75025, 5702887, 3524578, 2178309, 1346269, 832040, 63245986, 39088169, 24157817, 14930352, 9227465, 701408733
Offset: 0

Views

Author

Paul Curtz, May 08 2008

Keywords

Crossrefs

Programs

  • Mathematica
    With[{nn=10},Flatten[Reverse/@Partition[Fibonacci[Range[0,5*nn-1]],5]]] (* or *) LinearRecurrence[{0,0,0,0,11,0,0,0,0,1},{3,2,1,1,0,34,21,13,8,5},50] (* Harvey P. Dale, Jan 20 2015 *)

Formula

a(n) = 11*a(n-5) + a(n-10).
G.f.: (5*x^9 - 3*x^8 + 2*x^7 - x^6 + x^5 + x^3 + x^2 + 2*x + 3)/(-x^10 - 11*x^5 + 1). - Alexander R. Povolotsky, May 08 2008

Extensions

Extended beyond a(24) by R. J. Mathar, Nov 30 2008
Previous Showing 11-20 of 20 results.