23363

Appears in sequences

• Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 31 ones.at n=4A031799
• Numbers n which are divisors of the number produced by concatenating (n-1), (n-2), ... (n-5) in that order.at n=6A088869
• One seventh of the sum of the first n primes, when an integer.at n=36A112272
• Numbers n such that sigma(n) - phi(n) is a repdigit greater than 2.at n=44A116020
• Eigentriangle by rows, A143971 * (A108300 * 0^(n-k)); 1<=k<=1.at n=52A143972
• Number of partitions n such that the multiplicity of the number of odd parts is a part.at n=46A240541
• Solution of the complementary equation a(n) = a(n-1) + a(n-2) - b(n-1) + 6, where a(0) = 1, a(1) = 3, b(0) = 2, b(1) = 4.at n=20A294413