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A055661 Tower of Hanoi positions (A055662) converted from base 3 to base 10. 3
0, 1, 7, 8, 17, 15, 12, 13, 67, 68, 65, 63, 72, 73, 79, 80, 161, 159, 156, 157, 139, 140, 137, 135, 108, 109, 115, 116, 125, 123, 120, 121, 607, 608, 605, 603, 612, 613, 619, 620, 593, 591, 588, 589, 571, 572, 569, 567, 648, 649, 655, 656, 665, 663, 660, 661 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..55.

Z. Sunic, Tree morphisms, transducers and integer sequences

FORMULA

a(n) =sum (3^j*((-1)^j*(floor[(n/2^j+1)/2] mod 3)) with j=0 to floor[log2(n)]

CROSSREFS

Cf. A055662.

Sequence in context: A127933 A006878 A022312 * A287334 A054312 A106678

Adjacent sequences:  A055658 A055659 A055660 * A055662 A055663 A055664

KEYWORD

base,nonn

AUTHOR

Henry Bottomley, Jun 06 2000

STATUS

approved

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Last modified September 21 15:33 EDT 2017. Contains 292312 sequences.