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A256971 Partial sums of A256970. 2

%I #10 Apr 21 2015 12:29:49

%S 5,22,59,64,165,170,367,624,629,1030,1035,1612,2289,2294,2311,2316,

%T 2329,3626,3631,5232,5237,5250,5279,5284,5325,5330,8247,11384,11389,

%U 11402,11407,11424,15781,15786,15799,15804,21281,21334,21339,21376

%N Partial sums of A256970.

%D Richard Friedberg, An Adventurer's Guide to Number Theory, McGraw-Hill, NY, 1968.

%D Popular Computing (Calabasas, CA), Friedberg's Sequence, Vol. 5 (No. 46, Jan 1977), page PC46-2.

%H Reinhard Zumkeller, <a href="/A256971/b256971.txt">Table of n, a(n) for n = 1..10000</a>

%t Accumulate[Table[FactorInteger[4*n^2+1][[1,1]],{n,40}]] (* _Ivan N. Ianakiev_, Apr 20 2015 *)

%o (Haskell)

%o a256971 n = a256971_list !! (n-1)

%o a256971_list = scanl1 (+) a256970_list

%Y Cf. A053755, A256970.

%K nonn

%O 1,1

%A _N. J. A. Sloane_, Apr 19 2015

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Last modified August 24 14:29 EDT 2024. Contains 375415 sequences. (Running on oeis4.)