946781

Appears in sequences

• a(1) = a(2) = 1, a(3) = 4; thereafter a(n) = a(n-1) + a(n-3).at n=35A001609
• a(n) = A001609(n^2) for n>=1, where g.f. of A001609 is x*(1+3*x^2)/(1-x-x^3).at n=5A228647
• Number of independent vertex sets and vertex covers in the n-antiprism graph.at n=18A286910
• a(n) = round(c^n), where c is the supergolden ratio A092526.at n=36A382641