387567

Appears in sequences

• Triangular matrix T, read by rows, where row n of T equals row (n-1) of T^(n+1) with an appended '1'.at n=48A121412
• Column 3 of triangle A121412, in which row n of T=A121412 equals row (n-1) of T^(n+1) with an appended '1'.at n=6A121415
• Number of subpartitions of partition P=[0,0,0,0,1,1,1,1,1,2,2,2,2,2,2,3,...], where P(n) = [(sqrt(8*n+49) - 7)/2].at n=39A121433