51354

Appears in sequences

• a(n) = - 6*a(n-1) - 9*a(n-2) - 3*a(n-3) with a(0)=3, a(1)=-6, a(2)=18.at n=8A215634
• a(n) = A273059(4n).at n=40A275916
• Number of partitions of n into at most 2 copies of 1, 3 copies of 2, 4 copies of 3, ... .at n=50A303939