

A241155


a(n)=1 for n <= s+k; thereafter a(n) = Sum(a(nisa(ni1)),i=0..k1) where s=0, k=6.


6



1, 1, 1, 1, 1, 1, 6, 6, 6, 6, 6, 6, 11, 11, 11, 11, 11, 16, 11, 16, 16, 16, 21, 16, 21, 16, 21, 26, 21, 26, 21, 26, 26, 26, 31, 26, 31, 31, 31, 31, 31, 36, 36, 36, 36, 36, 36, 36, 41, 41, 41, 41, 41, 46, 41, 46, 46, 46, 51, 46, 51, 46, 51, 56, 51, 56, 51, 56, 56, 56, 61, 56, 61, 61, 61, 61, 61, 66, 66, 66, 66, 66
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OFFSET

1,7


REFERENCES

Callaghan, Joseph, John J. Chew III, and Stephen M. Tanny. "On the behavior of a family of metaFibonacci sequences." SIAM Journal on Discrete Mathematics 18.4 (2005): 794824. See Eq. (1.7).


LINKS

N. J. A. Sloane, Table of n, a(n) for n = 1..20000
Index entries for Hofstadtertype sequences


MAPLE

#T_s, k(n) from Callaghan et al. Eq. (1.7).
s:=0; k:=6;
a:=proc(n) option remember; global s, k;
if n <= s+k then 1
else
add(a(nisa(ni1)), i=0..k1);
fi; end;
t1:=[seq(a(n), n=1..100)];


CROSSREFS

Callaghan et al. (2005)'s sequences T_{0,k}(n) for k=1 through 7 are A000012, A046699, A046702, A240835, A241154, A241155, A240830.
Sequence in context: A082509 A226280 A103337 * A245399 A243758 A318355
Adjacent sequences: A241152 A241153 A241154 * A241156 A241157 A241158


KEYWORD

nonn


AUTHOR

N. J. A. Sloane, Apr 16 2014


STATUS

approved



