238267

Properties

Appears in sequences

• Expansion of 1/((1-x)*(1-5*x)(1-6*x)).at n=6A016228
• Group the natural numbers so that the product of the terms in each group + 1 is a prime: (1), (2), (3, 4), (5, 6), (7, 8, 9, 10, 11), (12), (13, 14, 15), (16), ... This is the sequence of such primes.at n=18A073688
• Number of polyiamonds with 2n cells that tile the plane by translation.at n=11A075216
• Primes of the form k^3 - k + 1.at n=23A100698
• Prime numbersat n=21083