30983

Properties

Appears in sequences

• Numbers whose set of base-13 digits is {1,4}.at n=33A032825
• Number of equicolorable (unrooted) trees on 2n nodes.at n=8A119856
• Smallest primes p = p(k) with (p(k)+p(k+1)+p(k+2))/15 an integer.at n=30A168556
• Permutation of natural numbers: a(0)=0, a(1)=1, a(2n)=A005228(1+(a(n))), a(2n+1)=A030124(a(n)).at n=56A232752
• Integers k such that 28*phi(29*197^3*k) is not a totient number where phi is the totient function.at n=11A361396
• Integers k such that A005245(m*k) < A005245(k) for some m.at n=13A380464
• Primes having only {0, 3, 8, 9} as digits.at n=36A386069
• Prime numbersat n=3340