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A071635 Number of decompositions of 4*n+2 into sum of two primes of form 4*k+1. 1
0, 0, 1, 0, 1, 1, 1, 1, 2, 0, 2, 2, 1, 2, 3, 0, 3, 2, 2, 3, 2, 1, 3, 2, 1, 4, 3, 2, 5, 3, 2, 5, 3, 2, 3, 4, 2, 5, 4, 1, 5, 3, 3, 4, 4, 1, 6, 4, 3, 6, 5, 2, 9, 3, 3, 4, 4, 2, 6, 4, 2, 8, 4, 4, 5, 4, 3, 8, 5, 2, 7, 7, 4, 9, 6, 3, 7, 6, 3, 6, 6, 2, 12, 5, 4, 8, 6, 5, 10, 4, 2, 10, 7, 4 (list; graph; refs; listen; history; internal format)
OFFSET

0,9

LINKS

Index entries for sequences related to Goldbach conjecture.

EXAMPLE

a(10)=2 as 4*10+2=42=5+37=(4*1+1)+(4*9+1)=13+29=(4*3+1)+(4*7+1) and the other two decompositions 42=11+31=(4*2+3)+(4*7+3)=19+23=(4*4+3)+(4*5+3), A002375(21)=4;

for a(m)=0 see A071636.

CROSSREFS

Cf. A002375, A002144.

Sequence in context: A060964 A118206 A029314 * A156643 A128664 A003823

Adjacent sequences:  A071632 A071633 A071634 * A071636 A071637 A071638

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), May 27 2002

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Last modified February 15 14:29 EST 2012. Contains 205813 sequences.