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 A046922 Number of ways to express n as p+2a^2; p prime, a >= 0. 4
 0, 1, 1, 1, 2, 0, 2, 0, 1, 1, 2, 0, 3, 0, 2, 0, 1, 0, 3, 1, 3, 0, 2, 0, 3, 0, 1, 0, 2, 0, 4, 0, 1, 1, 2, 0, 4, 0, 3, 0, 2, 0, 3, 0, 3, 0, 2, 0, 4, 0, 2, 1, 2, 0, 5, 0, 1, 0, 2, 0, 6, 0, 3, 0, 1, 0, 3, 0, 4, 0, 2, 0, 4, 1, 4, 0, 2, 0, 6, 0, 3, 0, 2, 0, 4, 0, 2, 0, 3, 0, 6, 0, 2, 0, 1, 0, 4, 0, 2 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,5 LINKS T. D. Noe, Table of n, a(n) for n=1..10000 L. Hodges, A lesser-known Goldbach conjecture, Math. Mag., 66 (1993), 45-47. PROG (Haskell) a046922 n = sum \$ map (a010051 . (n -)) \$ takeWhile (< n) a001105_list -- Reinhard Zumkeller, Apr 03 2013 CROSSREFS Cf. A042978, A046920, A046921, A046923, A060003, A143539. Cf. A010051, A001105. Sequence in context: A026612 A287341 A282432 * A193779 A279048 A263485 Adjacent sequences:  A046919 A046920 A046921 * A046923 A046924 A046925 KEYWORD nonn AUTHOR STATUS approved

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Last modified July 18 15:44 EDT 2019. Contains 325144 sequences. (Running on oeis4.)