40507

Properties

Appears in sequences

• Cycle class sequence c(2n) (the number of true cycles of length 2n in which a certain node is included) for zeolite LTN = Linde Type N Na384[Al384Si384O1536].518H2O starting with a T2 atom.at n=6A019037
• Prime numbers obtained by inserting a 0 between each pair of adjacent digits of a prime number > 10.at n=34A119680
• Primes of the form 5n^2 + 7.at n=8A201485
• Primes p such that 10p + 1, 100p + 1 and 1000p + 1 are also primes.at n=37A243962
• Intersection of A251964, A252280 and A252281.at n=42A252283
• a(n) = Sum_{k=0..floor(n/3)} Stirling2(n - 2*k,k).at n=17A357903
• Main diagonal of A365991: the n-th term in the trajectory of n under the A185452 map.at n=46A368301
• Primes having only {0, 4, 5, 7} as digits.at n=26A386070
• Prime numbersat n=4247