67018

Appears in sequences

• a(n) is the sum of squares of the first n positive integers congruent to 2 mod 3.at n=27A024394
• Number of palindromic Carlitz compositions of n.at n=42A239327
• Solution of the complementary equation a(n) = a(n-1) + a(n-2) + b(n), where a(0) = 2, a(1) = 4, b(0) = 1, b(1) = 3, b(2) = 5, and (a(n)) and (b(n)) are increasing complementary sequences.at n=19A295947