1100122

Appears in sequences

• a(n) appears in the congruences modulo 4 or 32 of Markoff numbers m(n) = A002559(n) for odd or even m(n).at n=50A309376
• Expansion of (1/x) * Series_Reversion( x / (1 + x + x^2 * (1 + x)^3) ).at n=12A378425