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Successive sums of the successive rows of the "diamond" mentioned in A320143.
1

%I #6 Oct 07 2018 19:17:41

%S 1,11,61,261,1036,3985,15219,58165,222865,856390,3299847,12746416,

%T 49344192,191395416,743674848,2894091631,11278509462,44009178795,

%U 171924012903,672337878973,2631830166082,10311300570030,40431914384036,158658644235797,623028506525311,2448135708410882,9625587448387240,37867431685796626,149051247009095036,586978615044109949,2312665720315534896,9115815083607895521

%N Successive sums of the successive rows of the "diamond" mentioned in A320143.

%H Lars Blomberg, <a href="/A320145/b320145.txt">Table of n, a(n) for n = 1..100</a>

%K base,nonn

%O 1,2

%A _Eric Angelini_ and _Lars Blomberg_, Oct 07 2018