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A046924
Number of ways to express n as p+2q; p, q = 1 or prime.
0
0, 0, 1, 1, 2, 1, 3, 1, 3, 0, 3, 1, 3, 0, 4, 1, 4, 0, 3, 0, 4, 0, 4, 1, 4, 0, 5, 1, 4, 0, 3, 0, 6, 0, 4, 1, 4, 0, 6, 1, 5, 0, 5, 0, 7, 0, 5, 1, 5, 0, 7, 0, 5, 0, 4, 0, 7, 0, 4, 1, 4, 0, 9, 1, 7, 0, 5, 0, 8, 0, 4, 0, 5, 0, 10, 1, 7, 0, 5, 0, 9, 0, 5, 1, 8, 0, 9, 1, 7, 0, 5, 0, 11, 0, 6, 1, 6, 0
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OFFSET
1,5
LINKS
Table of n, a(n) for n=1..98.
L. Hodges,
A lesser-known Goldbach conjecture
, Math. Mag., 66 (1993), 45-47.
Index entries for sequences related to Goldbach conjecture
CROSSREFS
Sequence in context:
A258643
A377009
A287561
*
A015710
A108415
A391043
Adjacent sequences:
A046921
A046922
A046923
*
A046925
A046926
A046927
KEYWORD
nonn
AUTHOR
David W. Wilson
STATUS
approved
