43345

Appears in sequences

• Numbers k such that the continued fraction for sqrt(k) has period 95.at n=32A020434
• Number of starting positions of Nim with 2n pieces such that 2nd player wins. Partitions of 2n such that xor-sum of partitions is 0.at n=28A048833
• Expansion of e.g.f. exp( Sum_{n>=0} x^(4*n+1)/(4*n+1) ).at n=9A193438
• a(n) = 1+2*(d1 + 1)*(d2 + 1)*...*(dk + 1), where d1, d2, ..., dk are the prime factors of the n-th Fermat pseudoprime to base 2 A001567(n).at n=32A216646
• Indices of primes in the 9th-order Fibonacci number sequence, A127193.at n=28A256498
• a(n) = (Sum_{j=1..h-1} a(n-j) + a(n-1)*a(n-h+1))/a(n-h) with a(1), ..., a(h)=1, where h = 4.at n=12A283958
• a(n) is the number of quadruples (a_1, a_2, a_3, a_4) having all terms in {1,...,n} such that there exists a quadrilateral with these side lengths.at n=15A346636
• Number of partitions of n whose greatest part is a multiple of 4.at n=49A363046
• Centered icositetrachoral numbers.at n=6A365204