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.

Showing 1-9 of 9 results.

A052147 a(n) = prime(n) + 2.

Original entry on oeis.org

4, 5, 7, 9, 13, 15, 19, 21, 25, 31, 33, 39, 43, 45, 49, 55, 61, 63, 69, 73, 75, 81, 85, 91, 99, 103, 105, 109, 111, 115, 129, 133, 139, 141, 151, 153, 159, 165, 169, 175, 181, 183, 193, 195, 199, 201, 213, 225, 229, 231, 235, 241, 243, 253, 259
Offset: 1

Views

Author

Simon Colton (simonco(AT)cs.york.ac.uk), Jan 24 2000

Keywords

Comments

A048974, A052147, A067187 and A088685 are very similar after dropping terms less than 13. - Eric W. Weisstein, Oct 10 2003
A117530(n,2) = a(n) for n>1. - Reinhard Zumkeller, Mar 26 2006
a(n) = A000040(n) + 2 = A008864(n) + 1 = A113395(n) - 1 = A175221(n) - 2 = A175222(n) - 3 = A139049(n) - 4 = A175223(n) - 5 = A175224(n) - 6 = A140353(n) - 7 = A175225(n) - 8. - Jaroslav Krizek, Mar 06 2010
Left edge of the triangle in A065342. - Reinhard Zumkeller, Jan 30 2012
Union of A006512 and A107986. - David James Sycamore, Jul 08 2018

Crossrefs

A139690 is a subsequence.

Programs

A175222 a(n) = prime(n) + 5.

Original entry on oeis.org

7, 8, 10, 12, 16, 18, 22, 24, 28, 34, 36, 42, 46, 48, 52, 58, 64, 66, 72, 76, 78, 84, 88, 94, 102, 106, 108, 112, 114, 118, 132, 136, 142, 144, 154, 156, 162, 168, 172, 178, 184, 186, 196, 198, 202, 204, 216, 228, 232, 234, 238, 244, 246, 256, 262, 268, 274, 276
Offset: 1

Views

Author

Jaroslav Krizek, Mar 06 2010

Keywords

Comments

a(n) = A000040(n) + 5 = A008864(n) + 4 = A052147(n) + 3 = A113395(n) + 2 = A175221 (n) + 1 = A139049(n) - 1 = A175223(n) - 2 = A175224(n) - 3 = A140353(n) - 4 = A175225(n) - 5.

Crossrefs

Programs

Extensions

More terms from Vincenzo Librandi, Mar 14 2010

A140353 a(n) = prime(n) + 9.

Original entry on oeis.org

11, 12, 14, 16, 20, 22, 26, 28, 32, 38, 40, 46, 50, 52, 56, 62, 68, 70, 76, 80, 82, 88, 92, 98, 106, 110, 112, 116, 118, 122, 136, 140, 146, 148, 158, 160, 166, 172, 176, 182, 188, 190, 200, 202, 206, 208, 220, 232, 236, 238, 242, 248, 250, 260, 266, 272, 278, 280, 286
Offset: 1

Views

Author

Odimar Fabeny, May 30 2008

Keywords

Comments

a(n) = A000040(n) + 9 = A008864(n) + 8 = A052147(n) + 7 = A113395(n) + 6 = A175221(n) + 5 = A175222(n) + 4 = A139049(n) + 3 = A175223(n) + 2 = A175224(n) + 1 = A175225(n) - 1. - Jaroslav Krizek, Mar 06 2010

Crossrefs

Programs

  • GAP
    Filtered([1..300], k-> IsPrime(k) ) +9 # G. C. Greubel, May 20 2019
  • Magma
    [NthPrime(n)+9: n in [1..70]]; // G. C. Greubel, May 20 2019
    
  • Mathematica
    9 + Prime[Range[70]] (* G. C. Greubel, May 20 2019 *)
  • PARI
    A140353(n) = prime(n)+9
    
  • Sage
    [nth_prime(n) +9 for n in (1..70)] # G. C. Greubel, May 20 2019
    

Extensions

Edited by Michael B. Porter, Jan 28 2010

A175221 a(n) = prime(n) + 4.

Original entry on oeis.org

6, 7, 9, 11, 15, 17, 21, 23, 27, 33, 35, 41, 45, 47, 51, 57, 63, 65, 71, 75, 77, 83, 87, 93, 101, 105, 107, 111, 113, 117, 131, 135, 141, 143, 153, 155, 161, 167, 171, 177, 183, 185, 195, 197, 201, 203, 215, 227, 231, 233, 237, 243, 245, 255, 261, 267, 273, 275
Offset: 1

Views

Author

Jaroslav Krizek, Mar 06 2010

Keywords

Programs

Formula

a(n) = A000040(n) + 4 = A008864(n) + 3 = A052147(n) + 2 = A113395(n) + 1.
a(n) = A175222(n) - 1 = A139049(n) - 2 = A175223(n) - 3.
a(n) = A175224(n) - 4 = A140353(n) - 5 = A175225(n) - 6.

Extensions

More terms from Vincenzo Librandi, Mar 14 2010

A139049 a(n) = prime(n) + 6.

Original entry on oeis.org

8, 9, 11, 13, 17, 19, 23, 25, 29, 35, 37, 43, 47, 49, 53, 59, 65, 67, 73, 77, 79, 85, 89, 95, 103, 107, 109, 113, 115, 119, 133, 137, 143, 145, 155, 157, 163, 169, 173, 179, 185, 187, 197, 199, 203, 205, 217, 229, 233, 235, 239, 245, 247, 257, 263, 269, 275, 277
Offset: 1

Views

Author

Odimar Fabeny, Jun 02 2008

Keywords

Comments

a(n) = A000040(n) + 6 = A008864(n) + 5 = A052147(n) + 4 = A113395(n) + 3 = A175221(n) + 2 = A175222(n) + 1 = A175223(n) - 1 = A175224(n) - 2 = A140353(n) - 3 = A175225(n) - 4. - Jaroslav Krizek, Mar 06 2010

Crossrefs

Cf. A140353.

Programs

Extensions

Edited by Michael B. Porter, Jan 28 2010

A175223 a(n) = prime(n) + 7.

Original entry on oeis.org

9, 10, 12, 14, 18, 20, 24, 26, 30, 36, 38, 44, 48, 50, 54, 60, 66, 68, 74, 78, 80, 86, 90, 96, 104, 108, 110, 114, 116, 120, 134, 138, 144, 146, 156, 158, 164, 170, 174, 180, 186, 188, 198, 200, 204, 206, 218, 230, 234, 236, 240, 246, 248, 258, 264, 270, 276, 278
Offset: 1

Views

Author

Jaroslav Krizek, Mar 06 2010

Keywords

Comments

a(n) = A000040(n) + 7 = A008864(n) + 6 = A052147(n) + 5 = A113395(n) + 4 = A175221(n) + 3 = A175222 (n) + 2 = A139049(n) + 1 = A175224(n) - 1 = A140353(n) - 2 = A175225(n) - 3.

Programs

Extensions

More terms from Vincenzo Librandi, Mar 14 2010

A175224 a(n) = prime(n) + 8.

Original entry on oeis.org

10, 11, 13, 15, 19, 21, 25, 27, 31, 37, 39, 45, 49, 51, 55, 61, 67, 69, 75, 79, 81, 87, 91, 97, 105, 109, 111, 115, 117, 121, 135, 139, 145, 147, 157, 159, 165, 171, 175, 181, 187, 189, 199, 201, 205, 207, 219, 231, 235, 237, 241, 247, 249, 259, 265, 271, 277, 279
Offset: 1

Views

Author

Jaroslav Krizek, Mar 06 2010

Keywords

Comments

a(n) = A000040(n) + 8 = A008864(n) + 7 = A052147(n) + 6 = A113395(n) + 5 = A175221(n) + 4 = A175222(n) + 3 = A139049(n) + 2 = A175223(n) + 1 = A140353(n) - 1 = A175225(n) - 2.

Crossrefs

Programs

Extensions

More terms from Vincenzo Librandi, Mar 14 2010

A175225 a(n) = prime(n) + 10.

Original entry on oeis.org

12, 13, 15, 17, 21, 23, 27, 29, 33, 39, 41, 47, 51, 53, 57, 63, 69, 71, 77, 81, 83, 89, 93, 99, 107, 111, 113, 117, 119, 123, 137, 141, 147, 149, 159, 161, 167, 173, 177, 183, 189, 191, 201, 203, 207, 209, 221, 233, 237, 239, 243, 249, 251, 261, 267, 273, 279, 281
Offset: 1

Views

Author

Jaroslav Krizek, Mar 06 2010

Keywords

Comments

a(n) = A000040(n) + 10 = A008864(n) + 9 = A052147(n) + 8 = A113395(n) + 7 = A175221(n) + 6 = A175222(n) + 5 = A139049(n) + 4 = A175223(n) + 3 = A175224(n) + 2 = A140353(n) + 1.

Crossrefs

Programs

Extensions

More terms from Vincenzo Librandi, Mar 14 2010

A113394 Triangle, read by rows, equal to the matrix cube of triangle A113389.

Original entry on oeis.org

1, 9, 1, 99, 18, 1, 1569, 360, 27, 1, 34344, 9051, 783, 36, 1, 980487, 284148, 26820, 1368, 45, 1, 34930455, 10865358, 1089126, 59250, 2115, 54, 1, 1502349459, 494019714, 51784137, 2946456, 110715, 3024, 63, 1, 76058669082, 26168502684
Offset: 0

Views

Author

Paul D. Hanna, Nov 14 2005

Keywords

Examples

			Triangle A113389^3 begins:
1;
9,1;
99,18,1;
1569,360,27,1;
34344,9051,783,36,1;
980487,284148,26820,1368,45,1;
34930455,10865358,1089126,59250,2115,54,1;
1502349459,494019714,51784137,2946456,110715,3024,63,1;
76058669082,26168502684,2840586075,167137110,6510780,185589,4095,72,1;
		

Crossrefs

Cf. A113389, A113395 (column 0); recurrence: A091351, A113355.

Programs

  • PARI
    T(n,k)=local(A,B);A=Mat(1);for(m=2,n+1,B=matrix(m,m); for(i=1,m, for(j=1,i,if(i<3 || j==i || j>m-1,B[i,j]=1,if(j==1, B[i,1]=1,B[i,j]=(A^(3*j-2))[i-j+1,1]));));A=B); (matrix(#A,#A,r,c,if(r>=c,(A^(3*c))[r-c+1,1]))^3)[n+1,k+1]

Formula

Column k of A113389^3 = column 0 of A113389^(3*k+3) for k>=0.
Showing 1-9 of 9 results.