a(n) is the sum of the odd degrees of the irreducible representations of the symmetric group S_n.

A089248

a(n) is the sum of the odd degrees of the irreducible representations of the symmetric group S_n.

Terms

    a(0) =1a(1) =2a(2) =2a(3) =8a(4) =12a(5) =40a(6) =144a(7) =128a(8) =644a(9) =3504a(10) =7000a(11) =48224a(12) =130992a(13) =861792a(14) =3257600a(15) =32768a(16) =425988a(17) =5833312a(18) =27621672a(19) =415526656a(20) =1987852432a(21) =17674429440a(22) =157807273408a(23) =265515959680

External references