24260

Appears in sequences

• McKay-Thompson series of class 29A for Monster.at n=37A058611
• a(n) = a(n-1) - 2*a(n-2) - 3*a(n-3) - ... - (n-1)*a(1), with a(1) = a(2) = 2, a(3) = -2.at n=15A106541
• Concatenate n and the sum of the digits of n raised to their own power (A045503).at n=24A108302
• Even numbers k such that if a person is born in year k and lives not more than 100 years, then he never celebrates his prime birthday on a prime year.at n=25A124658
• First differences of A000043.at n=27A134458
• McKay-Thompson series of class 29A for the Monster group with a(0) = 2.at n=37A136570
• Number of partitions of 3n into at most 5 parts.at n=28A256525
• Number of partitions of 4n into at most 5 parts.at n=21A256539
• Number of partitions of n into two sorts of parts having exactly 2 parts of the second sort.at n=19A258472
• Numbers m > 0 that have a divisor d > 1 with binomial(m+d, d) == 1 mod m.at n=41A290040
• a(n) = A333552(A333551(n)): indices of terms in Recamán's sequence A005132 where the construction avoided a record-sized collision.at n=47A333553
• Numbers k for which phi(k) = phi(k''), where phi is the Euler totient function (A000010) and k'' the second arithmetic derivative of k (A068346).at n=42A352331
• Numbers k for which k = phi(k') + phi(k''), where phi is the Euler totient function (A000010), k' the arithmetic derivative of k (A003415) and k'' the second arithmetic derivative of k (A068346).at n=14A352332