A023120 - OEIS

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A023120

Signature sequence of 1/sqrt(7) (arrange the numbers i+j*x (i,j >= 1) in increasing order; the sequence of i's is the signature of x).

1, 1, 1, 2, 1, 2, 1, 2, 1, 3, 2, 1, 3, 2, 1, 3, 2, 4, 1, 3, 2, 4, 1, 3, 2, 4, 1, 3, 5, 2, 4, 1, 3, 5, 2, 4, 1, 3, 5, 2, 4, 1, 6, 3, 5, 2, 4, 1, 6, 3, 5, 2, 4, 1, 6, 3, 5, 2, 7, 4, 1, 6, 3, 5, 2, 7, 4, 1, 6, 3, 5, 2, 7, 4, 1, 6, 3, 8, 5, 2, 7, 4, 1

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,4

REFERENCES

C. Kimberling, "Fractal Sequences and Interspersions", Ars Combinatoria, vol. 45 p 157 1997.

LINKS

T. D. Noe, Table of n, a(n) for n=1..1000

C. Kimberling, Interspersions

CROSSREFS

Sequence in context: A242397 A023132 A023124 * A167970 A126433 A237271

Adjacent sequences: A023117 A023118 A023119 * A023121 A023122 A023123

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved