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A088938 Occurrences of 2's in A088936. 4


%S 2,3,5,10,27,104,541,3498,26615,231172,2250129,24227486,285705643,

%T 3660694200,50624828357,751426146514,11913622408671,200919532718828,

%U 3591112295892985,67803855263483142,1348467602319393299

%N Occurrences of 2's in A088936.

%F a(n)=2+(1/2)*sum(k=1, n, sum(i=0, k, i!)), [_Benoit Cloitre_ and Claude Lenormand]

%Y Cf. A088936, A088937, A088939, A088940.

%K nonn

%O 1,1

%A _Benoit Cloitre_, Oct 25 2003

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Last modified June 22 04:06 EDT 2021. Contains 345367 sequences. (Running on oeis4.)