31083

Appears in sequences

• Generalized Pellian with second term equal to 5.at n=11A048655
• Numbers k such that (k^2 - 7)/2 is a square.at n=11A077443
• Numbers n such that (n+j) mod (2+j) = 1 for j from 0 to 6 and (n+7) mod 9 <> 1.at n=24A096025
• Expansion of g.f.: (5 - 3*x)/(1 - 6*x + x^2).at n=5A101386
• Shifted Pell recurrence: a(n) = 2*a(n-2) + a(n-4).at n=22A135246
• Indices k such that A020507(k)=Phi[k](-8) is prime, where Phi is a cyclotomic polynomial.at n=36A138922
• Number of Carlitz compositions of n with exactly three descents.at n=13A241693
• a(n) = 2*a(n - 2) + a(n - 4) with a(0) = -1, a(1) = 1, a(2) = 3, a(3) = 5.at n=23A266505
• a(n) = 2*a(n-4) + a(n-8) for n >= 8.at n=47A266506
• Number of relatively prime or monic partitions of n.at n=38A300486