A211132 -id:A211132 - cp's OEIS frontend

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A211127 One of 17 possible sets of eleven numbers of the form 3^alpha 5^beta 7^gamma whose sum of reciprocals is 1.

Original entry on oeis.org

3, 5, 7, 9, 15, 21, 25, 27, 53, 225, 945

Offset: 1

N. J. A. Sloane, Apr 02 2012

Nechemia Burshtein, All the solutions of the equation Sum_{i=1..11} 1/x_i = 1 in distinct integers of the form x_i = 3^alpha 5^beta 7^gamma, Disc. Math. (2008) Vol. 308, No. 18, 4286-4292. MR2427761 (2009e:11061)

The 17 solutions are given in A201643, A211118-A211132, A211134.

Cf. A201644, A201646, A201647, A201648, A201649.

A211128 One of 17 possible sets of eleven numbers of the form 3^alpha 5^beta 7^gamma whose sum of reciprocals is 1.

Original entry on oeis.org

3, 5, 7, 9, 15, 21, 25, 27, 49, 1225, 6615

Offset: 1

N. J. A. Sloane, Apr 02 2012

Nechemia Burshtein, All the solutions of the equation Sum_{i=1..11} 1/x_i = 1 in distinct integers of the form x_i = 3^alpha 5^beta 7^gamma, Disc. Math. (2008) Vol. 308, No. 18, 4286-4292. MR2427761 (2009e:11061)

The 17 solutions are given in A201643, A211118-A211132, A211134.

Cf. A201644, A201646, A201647, A201648, A201649.

A211129 One of 17 possible sets of eleven numbers of the form 3^alpha 5^beta 7^gamma whose sum of reciprocals is 1.

Original entry on oeis.org

3, 5, 7, 9, 15, 21, 25, 27, 49, 1323, 4725

Offset: 1

N. J. A. Sloane, Apr 02 2012

Nechemia Burshtein, All the solutions of the equation Sum_{i=1..11} 1/x_i = 1 in distinct integers of the form x_i = 3^alpha 5^beta 7^gamma, Disc. Math. (2008) Vol. 308, No. 18, 4286-4292. MR2427761 (2009e:11061)

The 17 solutions are given in A201643, A211118-A211132, A211134.

Cf. A201644, A201646, A201647, A201648, A201649.

A211130 One of 17 possible sets of eleven numbers of the form 3^alpha 5^beta 7^gamma whose sum of reciprocals is 1.

Original entry on oeis.org

3, 5, 7, 9, 15, 21, 25, 27, 63, 189, 4725

Offset: 1

N. J. A. Sloane, Apr 02 2012

Nechemia Burshtein, All the solutions of the equation Sum_{i=1..11} 1/x_i = 1 in distinct integers of the form x_i = 3^alpha 5^beta 7^gamma, Disc. Math. (2008) Vol. 308, No. 18, 4286-4292. MR2427761 (2009e:11061)

The 17 solutions are given in A201643, A211118-A211132, A211134.

Cf. A201644, A201646, A201647, A201648, A201649.

A211131 One of 17 possible sets of eleven numbers of the form 3^alpha 5^beta 7^gamma whose sum of reciprocals is 1.

Original entry on oeis.org

3, 5, 7, 9, 15, 21, 27, 35, 49, 81, 19845

Offset: 1

N. J. A. Sloane, Apr 02 2012

Nechemia Burshtein, All the solutions of the equation Sum_{i=1..11} 1/x_i = 1 in distinct integers of the form x_i = 3^alpha 5^beta 7^gamma, Disc. Math. (2008) Vol. 308, No. 18, 4286-4292. MR2427761 (2009e:11061)

The 17 solutions are given in A201643, A211118-A211132, A211134.

Cf. A201644, A201646, A201647, A201648, A201649.

Previous Showing 11-15 of 15 results.