217205

Appears in sequences

• Solution of the complementary equation a(n) = a(n-1) + a(n-2) + 2*b(n-1) - b(n-2) - 1, where a(0) = 1, a(1) = 2, b(0) = 3, and (a(n)) and (b(n)) are increasing complementary sequences.at n=22A294564
• Number of words of length n over an infinite alphabet such that all prefixes satisfy c(3*k + 1) >= c(3*k + 2), c(3*k + 1) >= c(3*k), c(3*k + 2) >= c(3*j + 1), and c(3*k) >= c(3*j + 1) for 0 <= k < j, where c(i) is the number of occurrences of the letter i.at n=11A392551