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A240831 Sequence U(n) arising from analysis of structure of A240830. 3
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 7, 1, 1, 1, 1, 1, 7, 1, 7, 1, 1, 1, 7, 1, 7, 1, 7, 1, 7, 1, 7, 1, 7, 1, 7, 7, 7, 1, 7, 1, 7, 7, 7, 7, 7, 1, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 13, 7, 7, 7, 7, 7, 13, 7, 13, 7, 7, 7, 13, 7, 13, 7, 13, 7, 13, 7, 13, 7, 13, 7, 19, 7, 13, 7, 13, 7, 19, 7, 19, 7, 13, 7, 19 (list; graph; refs; listen; history; text; internal format)
OFFSET

2,14

REFERENCES

Callaghan, Joseph, John J. Chew III, and Stephen M. Tanny. "On the behavior of a family of meta-Fibonacci sequences." SIAM Journal on Discrete Mathematics 18.4 (2005): 794-824. See Eq. (2.2) and Table 2.2.

LINKS

Table of n, a(n) for n=2..100.

Index entries for Hofstadter-type sequences

MAPLE

#T_s, k(n) from Callaghan et al. Eq. (2.2).

s:=0; k:=7;

T:=proc(n) option remember; global R, U, s, k; # A240830

if n <= s+k then 1

else

    add(U(n-i), i=0..k-1);

fi; end;

U:=proc(n) option remember; global R, T, s, k; # A240831

T(R(n)); end;

R:=proc(n) option remember; global U, T, s, k; # A240832

n-s-T(n-1); end;

t1:=[seq(U(n), n=2..100)];

CROSSREFS

Cf. A240830, A240832.

Sequence in context: A129408 A339748 A325470 * A170824 A248909 A140213

Adjacent sequences:  A240828 A240829 A240830 * A240832 A240833 A240834

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Apr 16 2014

STATUS

approved

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Last modified January 23 03:52 EST 2021. Contains 340384 sequences. (Running on oeis4.)