25822302

Appears in sequences

• Number of nX2 1..6 arrays containing at least one of each value, all equal values connected, and rows considered as a single number in nondecreasing order.at n=12A166779
• Sequence defined by the recurrence formula a(n+1)=sum(a(p)*a(n-p)+k,p=0..n)+l for n>=1, with here a(0)=1, a(1)=0, k=0 and l=-2.at n=19A176752