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 A137607 a(0)=361, a(n+1)=a(n)/2 if a(n) is even, else a(n+1)=a(0)-(a(n)+1)/2. 3
 361, 180, 90, 45, 338, 169, 276, 138, 69, 326, 163, 279, 221, 250, 125, 298, 149, 286, 143, 289, 216, 108, 54, 27, 347, 187, 267, 227, 247, 237, 242, 121, 300, 150, 75, 323, 199, 261, 230, 115, 303, 209, 256, 128, 64, 32, 16, 8, 4, 2, 1, 360, 180, 90, 45, 338, 169, 276, 138, 69, 326, 163, 279, 221, 250, 125, 298, 149, 286, 143, 289, 216, 108, 54, 27, 347, 187, 267, 227, 247, 237, 242, 121, 300, 150, 75, 323, 199, 261, 230, 115, 303, 209, 256, 128, 64, 32, 16, 8, 4, 2, 1, 360 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,1 COMMENTS For n>=1, periodic with period 51. - Vladeta Jovovic, Apr 28 2008 The rule is the following: b(0)=361. If b(n-1) is divisible by 2 then b(n) = b(n-1)/2. If b(n-1) is not divisible by two then b(n) = b(0)-(b(n-1)+1)/2. It is periodic. LINKS Table of n, a(n) for n=0..102. Index entries for linear recurrences with constant coefficients, signature (0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1). PROG (PARI) A137607(n) = if( !n, 361, for( i=0, n%51, n=if( i, if( n%2, 360-n\2, n\2), 360)); n) \\ M. F. Hasler, Apr 28 2008 CROSSREFS Cf. A096259. Sequence in context: A330906 A003799 A003930 * A325882 A255787 A219340 Adjacent sequences: A137604 A137605 A137606 * A137608 A137609 A137610 KEYWORD nonn,less AUTHOR Yasutoshi Kohmoto, Apr 23 2008 EXTENSIONS Clarified & extended by Vladeta Jovovic and M. F. Hasler, Apr 28 2008 The initial term, 361, seems anomalous. This sequence violates the rule that entries in the OEIS should not depend on an arbitrary but large parameter. - N. J. A. Sloane, May 17 2008 STATUS approved

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Last modified September 22 10:41 EDT 2023. Contains 365520 sequences. (Running on oeis4.)