Number of distinct (unordered) pairs of partitions of an 11-element set that have Rand distance n.

A192104

Number of distinct (unordered) pairs of partitions of an 11-element set that have Rand distance n.

Terms

    a(0) =1163085a(1) =5835060a(2) =21482340a(3) =74471760a(4) =222185304a(5) =612903720a(6) =1469224350a(7) =3164268690a(8) =5762811670a(9) =9538994388a(10) =13513772745a(11) =18112131840a(12) =20675910420a(13) =23653643310a(14) =22677991578a(15) =22923998460a(16) =19287053775a(17) =17554312490a(18) =13495597225a(19) =11143736604a(20) =8029798920a(21) =6035010960a(22) =4254456690a(23) =2872892550a(24) =1924619235a(25) =1215058680a(26) =789847190

External references