A274082 - OEIS

A274082

Decimal expansion of the base-2 logarithm of Otter's rooted tree constant.

1, 5, 6, 3, 5, 3, 1, 7, 1, 1, 0, 7, 0, 5, 5, 8, 5, 1, 0, 7, 3, 8, 8, 7, 9, 0, 3, 8, 6, 7, 8, 0, 6, 3, 9, 2, 2, 6, 9, 7, 8, 3, 7, 3, 2, 2, 8, 8, 9, 9, 4, 1, 2, 7, 8, 9, 2, 8, 0, 0, 6, 7, 9, 4, 9, 3, 8, 1, 6, 5, 7, 8, 0, 2, 0, 9, 6, 8, 8, 2, 4, 4, 6, 1, 3, 6, 2, 4, 0, 6, 2, 9, 7, 8, 5, 9, 9, 1, 1, 5, 8, 2, 7, 2

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OFFSET

1,2

COMMENTS

Storing an arbitrary unlabeled tree with n nodes takes an information-theoretic minimum of kn + O(log n) bits, where k = 1.56... is this constant. (This holds for either rooted or unrooted trees.)

LINKS

Table of n, a(n) for n=1..104.

Index entries for sequences related to trees

Index entries for sequences related to rooted trees

EXAMPLE

1.5635317110705585107388790386780639226978373228899412789280067949381657802...

CROSSREFS

Cf. A051491, A000055, A000081.

Sequence in context: A114598 A272489 A259500 * A199666 A307619 A123852

Adjacent sequences: A274079 A274080 A274081 * A274083 A274084 A274085

KEYWORD

nonn,cons

AUTHOR

Charles R Greathouse IV, Jun 09 2016

STATUS

approved