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A072832 First differences of Ulam's sequence A002858. 3
1, 1, 1, 2, 2, 3, 2, 3, 2, 8, 2, 8, 2, 9, 1, 5, 4, 5, 7, 3, 5, 5, 5, 10, 2, 3, 4, 8, 12, 5, 7, 7, 3, 7, 20, 2, 3, 2, 7, 8, 9, 3, 10, 2, 15, 2, 3, 2, 10, 5, 2, 13, 9, 27, 7, 3, 5, 15, 2, 15, 2, 5, 7, 12, 8, 10, 2, 7, 3, 2, 15, 2, 3, 7, 10, 5, 27, 2, 12, 5, 20, 2, 20, 2, 20, 2, 17, 17, 3, 2, 5, 12, 3 (list; graph; refs; listen; history; internal format)
OFFSET

1,4

COMMENTS

No pattern in this sequence has ever been observed, according to Finch.

REFERENCES

S. R. Finch, Mathematical Constants, Cambridge, 2003, pp. 145-151.

LINKS

Jud McCranie, Table of n, a(n) for n = 1..10000

Matthew M. Conroy, Home page (listed instead of email address)

S. R. Finch, Stolarsky-Harborth Constant

CROSSREFS

Cf. A002858.

Sequence in context: A144910 A080330 A152872 * A080328 A031266 A109301

Adjacent sequences:  A072829 A072830 A072831 * A072833 A072834 A072835

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com), Jul 25 2002

EXTENSIONS

More terms from Matthew M. Conroy, Aug 24 2002

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Last modified February 17 21:13 EST 2012. Contains 206085 sequences.