45901

Appears in sequences

• Denominators of continued fraction convergents to sqrt(467).at n=12A041891
• (n - phi(n)) | sigma(n) for composite n not congruent to 2 (mod 4).at n=38A055164
• Iccanobirt numbers (13 of 15): a(n) = R(R(a(n-1)) + a(n-2) + R(a(n-3))), where R is the digit reversal function A004086.at n=19A102123
• Iccanobirt semiprimes (13 of 15): Semiprime numbers in A102123.at n=6A102203
• Base-2 expansion of a(n) encodes the steps where numbers of the form 4k+3 are encountered when map x -> A252463(x) is iterated down to 1, starting from x=n.at n=58A292383
• Concatenation of ((p mod 4) - 1)/2 for the primes from 3 through prime(n), converted from binary to decimal.at n=15A362583
• Number of subsets of {1,2,...,n} such that no two elements differ by 2 or 5.at n=25A375977
• a(n) = n! * [x^n] exp(x*(1 + n*exp(x))).at n=5A389833