A065884 a(n) = A065824(A047845(n+1)).

323, 899, 1763, 5249, 3239, 979801, 5459, 10763, 9179, 9701, 10403, 12319, 5646547, 24569, 19109, 19043, 22499, 50819, 41309, 32639, 46979, 34579, 39059, 125969, 49769, 49949, 154559, 48554797, 114953, 52532203, 56624063, 195499, 75077, 79799, 72899

Offset

1,1

Comments

By definition (m+1)*phi(a(n)) = m*sigma(a(n)) where m=A065824(n+1).

Links

Table of n, a(n) for n=1..35.

Example

A065824(4) = 323, so a(1) = A065824[A047845(1+1)] = 323 A065824(16) = 979801 and a(6) = 979801 = A065824[A047845(1+6)]

Crossrefs

Cf. A065824, A047845, A000010, A000203.

Sequence in context: A257973 A083138 A121209 * A252452 A202610 A094394

Adjacent sequences: A065881 A065882 A065883 * A065885 A065886 A065887

Keyword

nonn

Author

Labos Elemer, Nov 27 2001

Extensions

Name corrected and more terms from Sean A. Irvine, Sep 17 2023

Status

approved