274534

Appears in sequences

• a(n)=a(n-1)+a(n-2)-d, where d=a(n/2) if n is even, else d=0; 2 initial terms.at n=30A050192
• Perfectly partitioned numbers: numbers k that divide the number of partitions p(k).at n=16A051177
• 1000000n+1, 1000000n+3, 1000000n+7, 1000000n+9 are all primes.at n=19A064965