13421772
domain: N
Appears in sequences
- Every run length in base 2 is 2.at n=11A043291
- Expansion of 1/((1-x)*(1-2*x)*(1+x^2)).at n=23A077854
- a(n) = 4 * floor(24*2^n/15) = 4*A077854(n).at n=21A102652
- a(n) is the number whose binary representation is the concatenation of n strings of the four digits "1100".at n=6A108020
- Number of closed walks of length n on the complete graph on 5 nodes from a given node.at n=13A109499
- G.f.: (4*x^2 + 2*x)/(4*x^3 - x^2 - 4*x + 1).at n=12A115243
- Row sums of triangle A118404.at n=26A118405
- a(n) = floor(A140657(n+2)/10).at n=25A140659
- a(n) = (n^9 - n)/10.at n=7A288604
- a(n) = a(n-2) + 4*a(n-3) - 4*a(n-5), where a(0) = 1, a(1) = 4, a(2) = 7, a(3) = 12, a(4) = 19, a(5) = 28.at n=33A297554
- a(n) = a(n-1) + 16*a(n-3) - 16*a(n-4), where a(0) = 1, a(1) = 4, a(2) = 8, a(3) = 12, a(4) = 76.at n=18A297555
- Number of monic irreducible polynomials of degree n over GF(8) that have a given nonzero trace.at n=9A300674