A164223 Number of binary strings of length n with equal numbers of 00010 and 10101 substrings.

1, 2, 4, 8, 16, 30, 56, 105, 198, 373, 703, 1331, 2526, 4800, 9140, 17438, 33329, 63819, 122416, 235214, 452699, 872650, 1684725, 3257267, 6306430, 12226254, 23733263, 46126348, 89751793, 174829691, 340911111, 665423385, 1300061079, 2542242086

Offset

0,2

Links

Alois P. Heinz, Table of n, a(n) for n = 0..1000 (first 501 terms from R. H. Hardin)

Crossrefs

Sequence in context: A164252 A164242 A164237 * A164199 A164260 A164262

Adjacent sequences: A164220 A164221 A164222 * A164224 A164225 A164226

Keyword

nonn

Author

R. H. Hardin, Aug 11 2009

Status

approved