A164223 - OEIS

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A164223

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

1

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

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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