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A053052 Append n to previous term, reverse alternate terms. 1
1, 21, 123, 4321, 12345, 654321, 1234567, 87654321, 123456789, 10987654321, 1234567891011, 121110987654321, 12345678910111213, 1413121110987654321, 123456789101112131415 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

REFERENCES

Felice Russo, A set of new Smarandache functions, sequences and conjectures in number theory, American Research Press 2000

LINKS

Table of n, a(n) for n=1..15.

CROSSREFS

A000422, A007908.

Sequence in context: A164785 A179956 A117388 * A243882 A002299 A303807

Adjacent sequences:  A053049 A053050 A053051 * A053053 A053054 A053055

KEYWORD

easy,base,nonn

AUTHOR

Felice Russo, Feb 25 2000

STATUS

approved

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Last modified June 14 15:19 EDT 2021. Contains 345025 sequences. (Running on oeis4.)