41578

Appears in sequences

• a(n) = 1^2 + prime(1)^2 + prime(2)^2 + ... + prime(n)^2.at n=22A024525
• Semiprimes that are the sum of the first n semiprimes for some n.at n=39A092190
• Records in A119632.at n=22A210611
• Subdiagonal partitions: number of partitions (p1, p2, p3, ...) of n with pi <= i.at n=45A238875
• G.f.: Sum_{n>=0} (n+1) * (x + x^n)^n.at n=79A325997
• Numbers k such that A003415(k) == A276085(k) (mod 2310), where A003415 is the arithmetic derivative and A276085 is the primorial base log-function.at n=40A391864