A070743 n sets a new record for the index of the (presumably) last palindrome in the 'Reverse and Add' trajectory of n.

1, 3, 5, 122, 160, 190, 739, 10000, 10058, 10151, 1003346, 1304392, 1702190

Offset

1,2

Comments

A070744 gives the corresponding records.

Links

Table of n, a(n) for n=1..13.

Index entries for sequences related to Reverse and Add!

Example

678736545637876 is the 36th term and (presumably) the last palindrome in the trajectory of 5; for k < 5 the last palindrome has an index < 36 in the trajectory of k (cf. A070742), so 5 is in the sequence.

Crossrefs

Cf. A065001, A065198, A070742, A070744.

Sequence in context: A054268 A153137 A105526 * A340823 A364545 A245442

Adjacent sequences: A070740 A070741 A070742 * A070744 A070745 A070746

Keyword

base,more,nonn

Author

Klaus Brockhaus, May 03 2002

Extensions

Offset corrected by Sean A. Irvine, Jun 11 2024

Status

approved