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 A255253 Complete list of siteswaps (indecomposable ground-state in concatenated decimal notation organized first by sum of digits and then by magnitude). 0

%I

%S 0,1,2,3,4,31,40,5,6,42,51,60,312,330,411,420,501,600,7,8,53,62,71,

%T 3122,3302,4013,4112,4130,4202,4400,5111,5120,5201,5300,6011,6020,

%U 7001,8000,9,423,441,450,522,531,603,612,630

%N Complete list of siteswaps (indecomposable ground-state in concatenated decimal notation organized first by sum of digits and then by magnitude).

%C Siteswaping is worthy of exploration in the elementary school classroom. In my experience (Gordon Hamilton) students across a full spectrum of ability find the subject matter intriguing and the mathematics engaging.

%C By "indecomposable" we mean that the juggling state sequence associated to each loop should not return to the ground state 7 (xxx) until after the last throw.

%C By "ground state" we mean that the permutation is chosen that is as large as possible. Example: 3302 is the same as 3023 and 0233 and 2330. Only the 3302 is in the list because it is the largest number.

%C The list breaks down at term 57, which requires a digit for "10." In the classroom this can be solved by writing "10" vertically or using commas.

%e There are 13 siteswap sequences that have a digit-sum of 9. In order, these are 9, 423, 441, 450, 522, 531, 603, 612, 630, 711, 720, 801, 900.

%Y Cf. A065178, A084509, A065180.

%K hear,nonn,fini,full

%O 1,3

%A _Gordon Hamilton_, Feb 18 2015

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Last modified December 5 23:38 EST 2021. Contains 349558 sequences. (Running on oeis4.)