2236962

Appears in sequences

• Numbers in which all pairs of consecutive base-4 digits differ by 2.at n=31A033082
• Expansion of 1/((1-x)*(1+2*x+x^2+2*x^3)).at n=22A077931
• Expansion of 1/((1-2*x)*(1-x^4)).at n=21A083593
• Decimal form of the binary numbers 10, 100010, 1000100010, 10001000100010, 100010001000100010,...at n=5A098704
• Expansion of 1/((1+x)*(1-2*x)*(1+x^2)).at n=22A115451
• G.f. x^2*(-1+x+x^2)/((1-x)*(2*x-1)*(x+1)*(x^2+1)).at n=25A115851
• a(0)=0, a(n)=4a(n-1)+2 for n odd, a(n)=4a(n-1) for n even.at n=11A117616
• a(n)=a(n-1)+a(n-2)+a(n-3)+2a(n-4).at n=25A139800
• a(0)=0; a(n+1) = 2*a(n) + period 4:repeat 0,1,-2,1.at n=25A181586