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A084334 a(1) = 1; a(n+1) is the least squarefree m not already used such that |m-a(n)| is not equal to |a(k+1)-a(k)| for any k < n. 2
1, 2, 5, 3, 7, 13, 6, 11, 19, 10, 21, 31, 14, 26, 39, 15, 29, 47, 17, 33, 53, 22, 37, 58, 23, 42, 65, 38, 66, 30, 55, 77, 34, 67, 35, 61, 95, 41, 70, 107, 43, 82, 122, 46, 87, 129, 51, 89, 133, 59, 105, 57, 102, 149, 62, 111, 161, 69, 127, 71, 123, 174, 73, 130, 183, 74 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..66.

CROSSREFS

Cf. A081145, A084331.

Sequence in context: A064359 A309006 A082152 * A096878 A249162 A134563

Adjacent sequences:  A084331 A084332 A084333 * A084335 A084336 A084337

KEYWORD

nonn,easy

AUTHOR

Amarnath Murthy and Meenakshi Srikanth (menakan_s(AT)yahoo.com), Jun 18 2003

EXTENSIONS

Edited and extended by David Wasserman, Dec 15 2004

STATUS

approved

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Last modified August 3 08:21 EDT 2021. Contains 346435 sequences. (Running on oeis4.)