Number of permutations of n elements with no fixed points and largest cycle of length 3.

A211880

Number of permutations of n elements with no fixed points and largest cycle of length 3.

Terms

    a(0) =0a(1) =0a(2) =0a(3) =2a(4) =0a(5) =20a(6) =40a(7) =210a(8) =1120a(9) =4760a(10) =25200a(11) =157850a(12) =800800a(13) =5345340a(14) =35035000a(15) =222472250a(16) =1648046400a(17) =12000388400a(18) =88529240800a(19) =720929459250

External references