203415

Appears in sequences

• Number of partitions of n into parts but with two kinds of parts of sizes 1 to 8.at n=27A103927
• In base 6, numbers n which have 6 distinct digits, do not start with 0, and have property that the product (written in base 6) of any two adjacent digits is a substring of n.at n=0A210017
• Expansion of (1-x-x^2)^2*(1+x-x^2)^2/((1-3*x+x^2)*(1-x)^2*(1+x)^4).at n=14A324483
• a(n) is the smallest number which can be represented as the sum of n distinct nonzero n-gonal pyramidal numbers in exactly n ways, or -1 if no such number exists.at n=16A350397
• 11-gonal numbers which are products of four distinct primes.at n=23A354086