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 A131772 Partial sums (A131771) equal this sequence excluding zeros located at positions {m*(m+1)/2, m>=0}, with a(0)=1. 2

%I

%S 1,0,1,2,0,4,4,8,0,12,20,20,32,0,52,72,104,104,156,0,228,332,436,592,

%T 592,820,0,1152,1588,2180,2772,3592,3592,4744,0,6332,8512,11284,14876,

%U 18468,23212,23212,29544,0,38056,49340,64216,82684,105896,129108,158652

%N Partial sums (A131771) equal this sequence excluding zeros located at positions {m*(m+1)/2, m>=0}, with a(0)=1.

%e Partial sums (A131771) begin:

%e [1,1,2,4,4,8,12,20,20,32,52,72,104,104,156,228,332,436,592,...].

%e Second partial sums (A131770) begin:

%e [1,2,4,8,12,20,32,52,72,104,156,228,332,436,592,...].

%o (PARI)

%Y Cf. A131770, A131771 (partial sums).

%K nonn

%O 0,4

%A _Paul D. Hanna_, Jul 14 2007

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Last modified March 19 19:30 EDT 2019. Contains 321330 sequences. (Running on oeis4.)