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A065016 Working in base 2, replace n with the concatenation of its prime factors (without repetition). 0
1, 10, 11, 10, 101, 1011, 111, 10, 11, 10101, 1011, 1011, 1101, 10111, 11101, 10, 10001, 1011, 10011, 10101, 11111, 101011, 10111, 1011, 101, 101101, 11, 10111, 11101, 1011101, 11111, 10, 111011, 1010001, 101111, 1011, 100101, 1010011 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..38.

MATHEMATICA

Prepend[ Table[ FromDigits[ Flatten[ IntegerDigits[ Transpose[ FactorInteger[n]] [[1]], 2]]], {n, 2, 50} ], 1]

CROSSREFS

Cf. A064841.

Sequence in context: A004053 A077812 A004288 * A087381 A136400 A121266

Adjacent sequences:  A065013 A065014 A065015 * A065017 A065018 A065019

KEYWORD

base,easy,nonn

AUTHOR

Robert G. Wilson v, Nov 01 2001

STATUS

approved

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Last modified September 17 08:31 EDT 2019. Contains 327127 sequences. (Running on oeis4.)