91193

Properties

Appears in sequences

• a(n) = ceiling(a(n-1)/2) + a(n-2) with a(0)=0 and a(1)=1.at n=46A064651
• Numbers such that every cyclic permutation is a prime.at n=39A068652
• Take A000040, omit commas: 23571113171923..., select 5-digit primes seen when scanning from left.at n=21A073038
• When A032523 is a maximum; or, A091657 less duplicates.at n=21A091658
• (Partial sums of the squarefree integers) that are prime.at n=33A194128
• Cyclic primes that are not absolute primes (A003459).at n=17A204844
• Circular primes that are not repunits.at n=38A293663
• Number of nX4 0..1 arrays with every element equal to 1, 2, 3, 5, 7 or 8 king-move adjacent elements, with upper left element zero.at n=6A299563
• Number of nX7 0..1 arrays with every element equal to 1, 2, 3, 5, 7 or 8 king-move adjacent elements, with upper left element zero.at n=3A299566
• T(n,k)=Number of nXk 0..1 arrays with every element equal to 1, 2, 3, 5, 7 or 8 king-move adjacent elements, with upper left element zero.at n=48A299567
• T(n,k)=Number of nXk 0..1 arrays with every element equal to 1, 2, 3, 5, 7 or 8 king-move adjacent elements, with upper left element zero.at n=51A299567
• Primes p such that exactly five numbers among all circular permutations of the digits of p are prime.at n=6A344629
• Prime numbersat n=8820