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A236231 Number of binary words of length n with exactly 2 (possibly overlapping) occurrences of the subword given by the binary expansion of n. 2
0, 0, 0, 1, 0, 1, 1, 13, 1, 18, 68, 142, 237, 862, 1672, 3188, 1768, 6078, 16090, 32566, 62214, 181695, 380903, 802572, 1634880, 3784693, 7871112, 17020646, 36800640, 78582498, 168074511, 206295476, 209557176, 490017420, 1097340244, 2222684855, 5116364054 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,8

LINKS

Alois P. Heinz, Table of n, a(n) for n = 0..1000

CROSSREFS

Column k=2 of A233940.

Sequence in context: A278634 A306507 A094709 * A040181 A123187 A272797

Adjacent sequences: A236228 A236229 A236230 * A236232 A236233 A236234

KEYWORD

nonn

AUTHOR

Alois P. Heinz, Jan 20 2014

STATUS

approved

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Last modified February 5 12:47 EST 2023. Contains 360084 sequences. (Running on oeis4.)