A030600 Length of the n-th run of digit 5 in A030588.

1, 1, 1, 1, 2, 1, 2, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 3, 1, 1, 2, 1, 1, 2, 1, 1, 2, 1, 1, 2, 1, 1, 3, 2, 3, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1

Offset

1,5

Links

Antti Karttunen, Table of n, a(n) for n = 1..20000

Prog

(PARI)
up_to = 20000;
A030600list(up_to, d=5) = { my(v=vector(up_to), ds=List([]), o=1, j=1, rl=0, i=0); while(i<up_to, if(j>#ds, ds=digits(o, 6); j=1; o+=2); if(d==ds[j], rl++, if(rl, i++; v[i] = rl; rl=0)); j++); (v); };
v030600 = A030600list(up_to);
A030600(n) = v030600[n]; \\ Antti Karttunen, Dec 24 2018

Crossrefs

Cf. A030588, A030596, A030597, A030598, A030599.

Sequence in context: A124760 A077619 A376141 * A079700 A357722 A374540

Adjacent sequences: A030597 A030598 A030599 * A030601 A030602 A030603

Keyword

nonn,base

Author

Clark Kimberling

Status

approved