35435

Appears in sequences

• Numbers n such that 81*2^n-1 is prime.at n=22A050566
• Recurrence derived from the decimal places of sqrt(2). a(0)=0, a(i+1)=position of first occurrence of a(i) in decimal places of sqrt(2).at n=13A098326
• Partial sum of Catalan numbers (A000108) multiplied by powers of 7.at n=4A112701
• Number of n X n binary arrays symmetric under 90 degree rotation with all ones connected only in a 1010-1111-1000 pattern in any orientation.at n=14A146648
• a(n) = a(n-1)+a(n-2)+a(n-3)+4*n^2-16*n+18 with a(0)=0, a(1)=0 and a(2)=1.at n=14A180669
• Numbers k such that sum_{i=1..k} d(i)^2 is a square c^2, where d(i) is the number of divisors of i.at n=18A186429
• a(n) = Sum_{k=0..floor(n/3)} binomial(n+k,k) * binomial(n-2*k,k).at n=13A383528