A376053 -id:A376053 - cp's OEIS frontend

A376052 Lexicographically earliest sequence of positive integers a(1), a(2), a(3), ... such that for any n > 0, S(n) = Sum_{k = 1..n} 1/((2k+1)a(k)) < 1.

1, 1, 1, 1, 1, 1, 2, 6, 31, 1527, 3509710, 19634198420529, 670572652324570519822017836, 444183929825540926086588009989665668909119960123355423

Offset: 1

Graph
List
Refs
Listen
History
Text
Internal format

N. J. A. Sloane, Sep 14 2024

nonn

Cf. A374663, A375516, A375531, A375532, A375781, A375522, A376048-A376051, A376053, A376054, A376055.

A376054 Denominator of sum S(n) defined in A376052.

Original entry on oeis.org

3, 15, 105, 315, 3465, 45045, 90090, 765765, 451035585, 25508568085, 411827311870584610, 525058386770138717020639964850, 528134692562568161116953143877712480332943632586669596900

Offset: 1

Graph
List
Refs
Listen
History
Text
Internal format

N. J. A. Sloane, Sep 14 2024

nonn
frac
base

			The initial values of S(n) are 1/3, 8/15, 71/105, 248/315, 3043/3465, 43024/45045, 89051/90090, ...

Cf. A374663, A375516, A375531, A375532, A375781, A375522, A376048-A376051, A376052, A376053, A376055

cp's OEIS Frontend

A376052 Lexicographically earliest sequence of positive integers a(1), a(2), a(3), ... such that for any n > 0, S(n) = Sum_{k = 1..n} 1/((2k+1)a(k)) < 1.

Views

Author

Keywords

Crossrefs

A376054 Denominator of sum S(n) defined in A376052.

Views

Author

Keywords

Examples

Crossrefs

cp's OEIS Frontend

A376052 Lexicographically earliest sequence of positive integers a(1), a(2), a(3), ... such that for any n > 0, S(n) = Sum_{k = 1..n} 1/((2*k+1)*a(k)) < 1.

Views

Author

Keywords

Crossrefs

A376054 Denominator of sum S(n) defined in A376052.

Views

Author

Keywords

Examples

Crossrefs

A376052 Lexicographically earliest sequence of positive integers a(1), a(2), a(3), ... such that for any n > 0, S(n) = Sum_{k = 1..n} 1/((2k+1)a(k)) < 1.