A061729 Start with 0; to get next term reverse digits and add 1 to each digit (9's get replaced by 10's).

0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 32, 34, 54, 56, 76, 78, 98, 910, 1210, 1232, 3432, 3454, 5654, 5676, 7876, 7898, 91098, 9101210, 12321210, 12323432, 34543432, 34545654, 56765654, 56767876, 78987876, 789891098, 910121091098, 910121012321210, 1232343212321210

Offset

0,3

Comments

a(98) has 1014 digits. Michael S. Branicky, Apr 14 2023

References

Norman Sullivan, Test Your Own IQ, Workman Publishing Co. New York, NY, 1994, pp. 49, 51.

Links

Michael S. Branicky, Table of n, a(n) for n = 0..97

Example

a(13) = 34 because the previous term was 32 and 32 reversed with 1 added to each digit is 34.

Prog

(Python)
from itertools import count, islice
def f(n): return int("".join(str(int(d)+1) for d in str(n)[::-1]))
def agen(): yield (an:=0); yield from (an:=f(an) for n in count(1))
print(list(islice(agen(), 41))) # Michael S. Branicky, Apr 14 2023

Crossrefs

Cf. A061728.

Sequence in context: A048322 A048335 A068862 * A286126 A249157 A033621

Adjacent sequences: A061726 A061727 A061728 * A061730 A061731 A061732

Keyword

easy,nonn,base

Author

Jason Earls, May 06 2001

Extensions

More terms from Larry Reeves (larryr(AT)acm.org), May 07 2001

a(39) and beyond from Michael S. Branicky, Apr 14 2023

Status

approved