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A136266 Coefficients of a new type of recursive polynomial based on Conway's A004001 chaotic sequence: B(x, n) = x*B(x, A004001(n - 1)) + B(x, n - A004001(n - 1)). 0
1, 0, 1, 0, 1, 1, 0, 1, 2, 0, 1, 2, 1, 0, 1, 3, 1, 0, 1, 3, 2, 0, 1, 3, 2, 1, 0, 1, 3, 3, 1, 0, 1, 4, 3, 1, 0, 1, 4, 4, 1, 0, 1, 4, 4, 2, 0, 1, 4, 4, 2, 1, 0, 1, 4, 5, 2, 1, 0, 1, 4, 5, 3, 1, 0, 1, 4, 5, 4, 1, 0, 1, 4, 6, 4, 1, 0, 1, 5, 6, 4, 1, 0, 1, 5, 7, 4, 1, 0, 1, 5, 7, 5, 1, 0, 1, 5, 7, 5, 2 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,9

COMMENTS

Row sums are: {1, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, ...}.

This sequence comes from trying to get a chaotic sequence like behavior in

a recursive polynomial. As far as I know this is a net type of triangular sequence

which I based on the similarity of the A049310

B(x,n) = x*B(x,n-1)+B(x,n-2)

to the Fibonacci sequence.

I use the Conway A004001 chaotic sequence to index this such that

I substitute:

n-1-> Conway[n - 1]

n-2-> n - Conway[n - 1]

REFERENCES

http://www-ec.njit.edu/~kappraff/

LINKS

Table of n, a(n) for n=1..100.

FORMULA

B(x, n) = x*B(x, A004001(n - 1)) + B(x, n - A004001(n - 1)).

EXAMPLE

{1},

{0, 1},

{0, 1, 1},

{0, 1, 2},

{0, 1, 2, 1},

{0, 1, 3, 1},

{0, 1, 3, 2},

{0, 1, 3, 2, 1},

{0, 1, 3, 3, 1},

{0, 1, 4, 3, 1},

{0, 1, 4, 4, 1},

{0, 1, 4, 4, 2},

{0, 1, 4, 4, 2, 1},

{0, 1, 4, 5, 2, 1},

{0, 1, 4, 5, 3, 1},

{0, 1, 4, 5, 4, 1},

{0, 1, 4, 6, 4, 1},

{0, 1, 5, 6, 4, 1},

{0, 1, 5, 7, 4, 1},

{0, 1, 5, 7, 5, 1},

{0, 1, 5, 7, 5, 2}

MATHEMATICA

Clear[Conway] Conway[0] = 1; Conway[1] = 1; Conway[2] = 1; Conway[n_] := Conway[n] = Conway[Conway[n - 1]] + Conway[n - Conway[n - 1]]; Clear[B, x, n]; B[x, 0] = 1; B[x, 1] = x; B[x_, n_] := B[x, n] = x*B[x, Conway[n - 1]] + B[x, n - Conway[n - 1]]; Table[ExpandAll[B[x, n]], {n, 0, 10}]; a = Table[CoefficientList[B[x, n], x], {n, 0, 10}] Flatten[a]

CROSSREFS

Cf. A004001, A049310.

Sequence in context: A075993 A117170 A117466 * A292047 A292049 A320341

Adjacent sequences: A136263 A136264 A136265 * A136267 A136268 A136269

KEYWORD

nonn,uned,tabf

AUTHOR

Roger L. Bagula, Mar 18 2008

STATUS

approved

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Last modified December 5 02:30 EST 2022. Contains 358572 sequences. (Running on oeis4.)