36561

Appears in sequences

• Expansion of 1/((1-x)(1-2x)(1-4x)(1-6x)).at n=5A021076
• Difference between the sum of next prime(n) natural numbers and the sum of next n primes.at n=23A082749
• Alkane systems (see Cyvin reference for precise definition).at n=13A121186
• Limit of reversed rows of triangle A126347, in which row sums equal Bell numbers (A000110).at n=25A126348
• Least positive integer k with prime(k)^2-2 and prime(prime(k))^2-2 both prime such that prime(k*n)^2-2 and prime(prime(k*n))^2-2 are all prime.at n=29A261281
• Number of set partitions of [n] into exactly five blocks such that all odd elements are in blocks with an odd index and all even elements are in blocks with an even index.at n=10A274869
• Solution of the complementary equation a(n) = a(n-1) + a(n-2) + n*b(n-2), where a(0) = 2, a(1) = 3, b(0) = 1, and (a(n)) and (b(n)) are increasing complementary sequences.at n=16A296287