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Search: id:A068223
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A068223 Bit-masks of A068221 shown in binary. +0
4
1, 11, 11011, 1101100011011, 1101100011011000001101100011011, 110110001101100000110110001101100000000001101100011011000001101100011011, 110110001101100000110110001101100000000001101100011011000001101100011011000000000000110110001101100000110110001101100000000001101100011011000001101100011011 (list; graph; listen)
OFFSET

1,2

CROSSREFS

The width of central gap of the term a(n) (n>1)= 0, 1, 3, 5, 10, 12, ... is given by A068059(n-1)-1. Cf. A068224, A068739.

Adjacent sequences: A068220 A068221 A068222 this_sequence A068224 A068225 A068226

Sequence in context: A114120 A118557 A138713 this_sequence A068224 A066945 A113615

KEYWORD

nonn

AUTHOR

Antti Karttunen (firstname.surname ), Feb 26 2002

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Last modified October 15 20:12 EDT 2008. Contains 145099 sequences.


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