228235

Appears in sequences

• a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n-k+1), where k = [ n/2 ], s = (Fibonacci numbers), t = (composite numbers).at n=35A025081
• Lucky numbers that are decimal concatenations of n with n + 7.at n=20A032657