461529

Appears in sequences

• a(n) = c(prime(n))/prime(n), where c = Perrin sequence A001608 (starting 0,2,3,...) and prime(n) is the n-th prime.at n=17A014981
• Inverse Euler transform of A000931.at n=60A018243
• Sum of numbers that can be written as t*n + u*(n+1) for nonnegative integers t,u in exactly four ways.at n=17A076457