415639

Appears in sequences

• Number of primes with 3n digits made of adjacent primes with 3 digits.at n=2A135946
• Solution of the complementary equation a(n) = a(n-1) + a(n-2) + b(n-1) + 2n, where a(0) = 1, a(1) = 2, b(0) = 3, and (a(n)) and (b(n)) are increasing complementary sequences.at n=22A294547