47888

Appears in sequences

• a(n) = a(1) + a(2) + ... + a(n-1) - a(m) for n >= 4, 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 and a(3) = 2.at n=17A049890
• McKay-Thompson series of class 29A for Monster.at n=41A058611
• Number of isomorphism classes of linking pairings on finite Abelian 2-groups of fixed order 2^n.at n=24A122555
• McKay-Thompson series of class 29A for the Monster group with a(0) = 2.at n=41A136570
• Number of compositions (ordered partitions) of n into centered hexagonal numbers (A003215).at n=50A322802
• Numbers k with digits in nondecreasing order and each digit > 1 such that the iterated product of digits of k is a prime and k is the least positive integer with this property and its product of digits.at n=27A333960