27498

Appears in sequences

• Expansion of Product_{m>=1} (1 - m*q^m)^6.at n=17A022666
• Numbers whose base-5 representation contains exactly three 3's and three 4's.at n=23A045307
• Barely abundant numbers: abundant n such that sigma(n)/n < sigma(m)/m for all abundant numbers m<n, sigma(n) being the sum of the divisors of n.at n=28A071927
• Sum of first n 7-almost primes.at n=28A086059
• Average of 4 primes where the integer Schwarzian derivative is zero.at n=27A094903
• Number of n X n 0..7 matrices with each 2X2 subblock idempotent.at n=10A224664
• Number of partitions p of n such that 2*(number of even numbers in p) = (number of odd numbers in p).at n=51A241653
• Number of compositions of n into parts with distinct multiplicities.at n=17A242882