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A097713 Column 1 of triangle A097712. 1

%I

%S 1,3,8,25,111,809,10360,236952,9708797,714862984,95000655195,

%T 22902964060238,10070812803900694,8120691251242651341,

%U 12070960239863869828931,33238610095183531376362138

%N Column 1 of triangle A097712.

%C Equals the partial sums of A016121; the row sums of triangle A097712 equals A016121. A016121 equals the number of sequences (a_1, a_2, ..., a_n) of length n with a_1 = 1 satisfying a_i <= a_{i+1} <= 2*a_i.

%Y Cf. A097712, A016121.

%K nonn

%O 0,2

%A _Paul D. Hanna_, Aug 24 2004

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Last modified September 18 05:32 EDT 2019. Contains 327165 sequences. (Running on oeis4.)