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A028425 Clog sequence in base 4. Right to left concatenation of n, int(log_4(n)), int(log_4(int(log_4(n)))), ... in base 4. 0
1, 2, 3, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 176, 177, 178, 179, 180, 181, 182, 183 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..55.

CROSSREFS

Sequence in context: A279719 A279672 A089181 * A224987 A024630 A032809

Adjacent sequences:  A028422 A028423 A028424 * A028426 A028427 A028428

KEYWORD

nonn,base,easy

AUTHOR

Olivier Gérard

STATUS

approved

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Last modified December 9 02:23 EST 2021. Contains 349624 sequences. (Running on oeis4.)