23092

Appears in sequences

• Numbers whose set of base-12 digits is {1,4}.at n=37A032824
• G.f.: Sum( x^k/(1-2*x+x^k), k=1..oo).at n=18A186537
• Solution of the complementary equation a(n) = a(n-1) + a(n-2) + b(n-1) + 1, where a(0) = 1, a(1) = 3, b(0) = 2, b(1) = 4.at n=17A293406
• Number of edge covers in the n-dipyramidal graph.at n=4A296995
• a(n) = 2*a(n-1)-2*a(n-2)+a(n-3)+2*a(n-4) with a(0)=a(1)=0, a(2)=2, a(3)=3.at n=23A307688
• Number of partitions of n into 9 or more distinct parts.at n=42A347576
• Numbers m such that there exists at least one integer k < m where m^2 + 2 and k^2 + 2 have the same prime factors.at n=33A348889
• Number of integer compositions y of n with a fixed point y(i) = i.at n=16A352875
• a(n) = Sum_{j=1..n} Sum_{k=1..n} sigma(j*k).at n=13A372675