18138

Appears in sequences

• Number of partitions of n into at most 7 parts.at n=50A008636
• Number of partitions satisfying cn(2,5) + cn(3,5) < cn(1,5) + cn(4,5).at n=38A039893
• Numbers k that, when expressed in base 6 and then interpreted in base 8, give a multiple of k.at n=19A062937
• Number of partitions of n into parts not greater than sqrt(n).at n=50A097356
• 0-sequence of reduction of tetrahedral number sequence by x^2 -> x+1.at n=10A192246
• a(n) = Sum_{k=1..n} F(n mod k) where F = A000045, the Fibonacci numbers.at n=40A198259
• a(n) is the numerator of the generalized continued fraction with terms sigma(m)/m for m=1 to n.at n=8A254059
• Number of partitions of positive integer n such that all parts are less than the square root of n.at n=49A316353
• Least positive integer k such that Sum_{i=1..k} phi(i) >= 10^n.at n=8A343802
• Numbers that can be represented as p^r + q^s with 4 distinct odd primes p, q, r, s.at n=0A390179