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A068223 Bit-masks of A068221 shown in binary. 3
1, 11, 11011, 1101100011011, 1101100011011000001101100011011, 110110001101100000110110001101100000000001101100011011000001101100011011, 110110001101100000110110001101100000000001101100011011000001101100011011000000000000110110001101100000110110001101100000000001101100011011000001101100011011 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..7.

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.

Sequence in context: A267273 A138713 A267923 * A068224 A066945 A267359

Adjacent sequences:  A068220 A068221 A068222 * A068224 A068225 A068226

KEYWORD

nonn

AUTHOR

Antti Karttunen, Feb 26 2002

STATUS

approved

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Last modified October 21 16:50 EDT 2019. Contains 328302 sequences. (Running on oeis4.)