50610

Appears in sequences

• 9-gonal (or enneagonal) pyramidal numbers: a(n) = n*(n+1)*(7*n-4)/6.at n=35A007584
• a(n) = a(1) + a(2) + ... + a(n-1) + a(m) for n >= 3, where m = n - 1 - 2^p and p is the unique integer such that 2^p < n - 1 <= 2^(p+1), starting with a(1) = a(2) = 1.at n=16A049942
• a(n) = n^4 - n.at n=15A058895
• A001067 appears to count the periodic points for a certain map. If so, then this is the sequence of the numbers of orbits of length n.at n=12A060309
• Diagonal sums of number array A082105.at n=17A082107
• Numbers whose set of base 15 digits is {0,E}, where E base 15 = 14 base 10.at n=14A097261
• Numbers k having exactly 5 distinct prime factors, the largest of which is greater than or equal to sqrt(k) (i.e., sqrt(k)-rough numbers with exactly 5 distinct prime factors).at n=6A115959
• Integers having ideal digital mean up to base 5.at n=35A144800
• a(n) = 225*n^2 - n.at n=14A156813
• a(n) = 225*n^2 - 15.at n=14A158559
• Even 9-gonal (nonagonal) pyramidal numbers.at n=25A218329
• A sum over partitions (q=15), see first comment.at n=4A221582
• Number of ordered ways of writing the n-th n-gonal number as a sum of n nonzero n-gonal numbers.at n=10A335634
• Products of 5 distinct primes that are sandwiched between sphenic numbers.at n=0A376929