204325

Appears in sequences

• Triangle read by rows in which the n-th row gives the smallest set of n consecutive numbers with the same prime signatures.at n=12A083785
• E.g.f. A(x) satisfies differential equation A'''(x)=A(x)+1/2*A(x)^2, A(0)=0, A'(0)=1, A''(0)=1, A'''(0)=1.at n=15A200542