153313

Properties

Appears in sequences

• "DGK" (bracelet, element, unlabeled) transform of 2,1,1,1,...at n=37A032232
• a(n) = ((1+4*sqrt(2))*(1+2*sqrt(2))^n + (1-4*sqrt(2))*(1-2*sqrt(2))^n)/2.at n=8A164602
• Primes of the form sigma(k) + product of divisors of k.at n=39A260108
• Number of Dyck paths of semilength n such that the maximal number of peaks per level equals seven.at n=8A288748
• a(n) is the index where n appears for first time in the list of first differences of the numbers with middle divisors.at n=32A390114
• Prime numbersat n=14132