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A077325
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Average of terms of n-th row of A077321.
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5
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2, 4, 13, 31, 55, 77, 215, 227, 271, 308, 661, 438, 825, 806, 1229, 1271, 1943, 1388, 2379, 2106, 2997, 2393, 3377, 2856, 4437, 4051, 6043, 4299, 7041, 4157, 8393, 6628, 8005, 7409, 9821, 7684, 12549, 10233, 12581, 11090, 14249, 9811, 18467, 13616
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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FORMULA
| a(n) = A077324(n)/n.
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MAPLE
| A077325 := proc(nmax) local n, a, T, i, p, s ; T := [] ; a := [] ; n :=1 ; while nops(a) < nmax do s := 0 ; for i from 1 to n do p := 2 ; while ( p in T ) or (p-1) mod n <> 0 do p := nextprime(p) ; od ; T := [op(T), p] ; s := s+p ; od ; a := [op(a), s/n] ; n := n+1 ; od ; RETURN(a) ; end: A077325(50) ; - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Feb 03 2007
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CROSSREFS
| Cf. A077321, A077322, A077323, A077324.
Sequence in context: A153933 A128601 A034500 * A148213 A148214 A148215
Adjacent sequences: A077322 A077323 A077324 * A077326 A077327 A077328
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KEYWORD
| nonn
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AUTHOR
| Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Nov 04 2002
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EXTENSIONS
| Corrected and extended by R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Feb 03 2007
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