23288

Appears in sequences

• McKay-Thompson series of class 26a for Monster.at n=32A058598
• G.f. satisfies: A(x) = 1 + x*A(x)*A(-x) + x^2*(A(x) + A(-x)).at n=29A208887
• G.f.: (1+4*x+x^2)/(1-4*x+x^2).at n=7A234272
• Numbers k such that if x = sigma(k) + tau(k) - k then k = sigma(x) + tau(x) - x.at n=22A238226
• Number of monohedral disk tilings of type C^t_{3,n}.at n=24A296361
• Number of different periodic multisets that fit within some normal multiset of weight n.at n=17A304648
• a(n) = 2*n*(7*n - 3).at n=41A316466
• a(n) = n-th row common denominator of A321121.at n=15A321122
• Greater members of dihedral amicable pairs: numbers (m, k) such that t(m) = t(k) = m + k, where t(k) = sigma(k) + d(k).at n=6A322254
• Partition the decimal expansion of Pi into non-overlapping strings of length 10: 3141592653, 5897932384,..; a(n) is the position of the strings where digits are different from each other.at n=8A329368
• Expansion of sqrt(1 + 4*x)/(1 - 4*x).at n=7A349834
• Number of integer partitions of n whose parts do not have choosable sets of strict integer partitions.at n=38A387137