26637
domain: N
Appears in sequences
- Number of isomorphism classes of 4-regular loopless multigraphs of order n.at n=11A129418
- Numbers of the form 68+p^2 (where p is a prime).at n=37A138691
- Number of ways to place zero or more nonadjacent 1,1 2,0 2,1 3,1 3,2 4,1 polyhexes in any orientation on a planar nXnXn triangular grid.at n=8A155269
- Smith numbers of order 3.at n=5A178213
- Number of 0..2 arrays of length n+7 with sum no more than 8 in any length 8 subsequence (=50% duty cycle).at n=2A212228
- T(n,k)=Number of 0..2 arrays of length n+2*k-1 with sum no more than 2*k in any length 2k subsequence (=50% duty cycle).at n=17A212232
- Number of 0..2 arrays of length 2+2*n with sum no more than 2*n in any length 2n subsequence (=50% duty cycle).at n=3A212235
- a(0)=1, a(1)=2; for n>1, a(n) = n*(2^n+4)/4.at n=13A227978
- Number of partitions of (5, n) into a sum of distinct pairs.at n=22A268348
- p-INVERT of (0,1,0,1,0,1,...), where p(S) = 1 - S^3 - S^6.at n=21A291221