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A090424 Smallest number that can be written in binary representation as concatenation of other primes in exactly n ways. 1
2, 11, 23, 47, 367, 95, 189, 509, 191, 381, 751, 959, 1021, 383, 765, 1023, 3067, 2045, 767, 4087, 11247, 3063, 1533, 6013, 5631, 8183, 4093, 6111, 1535, 15869, 11775, 8127 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

COMMENTS

A090418(a(n)) = n and A090418(m) <> n for m < a(n).

EXAMPLE

n=6: a(6)=95 -> '1011111': '10"11111'==2"31, '10"11"111'==2"3"7, '10"111"11'==2"7"3, '101"11"11'==5"3"3, '1011"111'==11"7 and '10111"11'==23"3, therefore A090418(95)=6.

CROSSREFS

Cf. A004676, A007088.

Sequence in context: A179878 A126916 A056637 * A141423 A106974 A198277

Adjacent sequences:  A090421 A090422 A090423 * A090425 A090426 A090427

KEYWORD

nonn,base

AUTHOR

Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Nov 30 2003

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Last modified February 17 16:49 EST 2012. Contains 206058 sequences.