23105

Appears in sequences

• a(0)=0, a(1)=1; a(n) = 13*a(n-1) - 11*a(n-2).at n=5A084328
• a(n) = S(5*n,5)/S(n,5) where S(n,m) = Sum_{k=0..n} binomial(n,k)*Fibonacci(m*k).at n=0A087425
• a(n) = 16*n^2 + 1.at n=37A108211
• a(n) = 64*n^2 + 1.at n=19A158686
• Beach-Williams Pell numbers of type k^2 + 1.at n=18A212082
• Number of tilings of an n X 1 rectangle by tiles of dimension 1 X 1 and 2 X 1 such that every tile shares an equal-length edge with a tile of the same size.at n=33A248880
• Centered octahemioctahedral numbers: a(n) = (4*n^3+24*n^2+8*n+3)/3.at n=24A274974
• Sum of the squares of the larger parts of the partitions of 2n into two squarefree parts.at n=27A280322
• Positions of 0's in A330314.at n=29A330325
• a(0) = 1; a(n) = -a(n-1) + 2 * Sum_{k=0..floor((n-1)/2)} a(k) * a(n-2*k-1).at n=17A351938
• Number of integer partitions of n with a neighborless part.at n=38A356236
• Numbers k such that A003415(k) == A276085(k) (mod 2310), where A003415 is the arithmetic derivative and A276085 is the primorial base log-function.at n=24A391864