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 A159004 Numbers n which equal the sum of the prime factors of n^2+1217*n+370313. 0
 309, 311, 381, 799, 851, 3515, 3535, 8659, 10199, 10331, 30461, 32853, 40135, 43255, 202099, 453931, 504415, 1365303, 2473735, 2545039, 20506915, 27172301, 31496621, 150107891, 4180621181, 23338398423, 608602531091 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Table of n, a(n) for n=1..27. FORMULA {n: A001414(n^2+1217*n+370313)=n}. EXAMPLE For n=309, n^2+1217*n+370313= 841847=71*71*167, and 71+71+167=309. For n=311, n^2+1217*n+370313=845521=61*83*167, and 61+83+167=311. MAPLE A001414 := proc(n) pfs := ifactors(n)[2] ; add(op(1, p)*op(2, p), p=pfs) ; end: for n from 0 do p := n^2+1217*n+370313; if A001414(p) = n then printf("%d, \n", n) ; fi; od: # R. J. Mathar, Jul 26 2009 CROSSREFS Sequence in context: A337955 A091552 A364936 * A031782 A060980 A061881 Adjacent sequences: A159001 A159002 A159003 * A159005 A159006 A159007 KEYWORD nonn,less AUTHOR Vincenzo Librandi, Jun 30 2009 EXTENSIONS Edited by R. J. Mathar, Jul 26 2009 Corrected by Zak Seidov, Jul 29 2009 STATUS approved

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Last modified July 15 06:17 EDT 2024. Contains 374324 sequences. (Running on oeis4.)