77506

Appears in sequences

• G.f. satisfies A(x) = 1 + x*cycle_index(G,A(x)) where G = cyclic group of order 2 generated by (1,2)(3,4).at n=9A036723
• Eighth column (k=7) of septinomial array A063265.at n=12A063267
• T(n,3) diagonal of triangle in A095693.at n=10A095694
• Number of permutations of [n] in which the length of every increasing run is 0 or 1 (mod 10).at n=15A322283