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A306481 Lychrel numbers k that set a new record for the number of 'Reverse and Add' steps in base 2 needed to reach a Lychrel number m < k (i.e., its seed). 1
22, 26, 67, 106, 157, 199, 281, 1145, 1594, 1798, 4326, 12794, 17407, 18428, 67583, 69628, 73978 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Records in A306482.

Similar to the number of steps needed to reach a palindrome in the Reverse and Add! trajectories (see A066144 and A066145), the number of steps needed for a Lychrel number to reach the trajectory of its seed is relatively small.

Lychrel numbers in A066059; seeds in A075252 (for base 2).

LINKS

Table of n, a(n) for n=1..17.

CROSSREFS

Cf. A066059, A066144, A066145, A075252, A306482.

Sequence in context: A277624 A243140 A321996 * A211320 A215601 A172053

Adjacent sequences:  A306478 A306479 A306480 * A306482 A306483 A306484

KEYWORD

nonn,base,more

AUTHOR

A.H.M. Smeets, Feb 18 2019

STATUS

approved

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Last modified September 22 12:19 EDT 2019. Contains 327307 sequences. (Running on oeis4.)