The number of grains of sand in the identity element for the 3D sandpile group on an n X n X n cubic grid.

A351379

The number of grains of sand in the identity element for the 3D sandpile group on an n X n X n cubic grid.

Terms

    a(0) =24a(1) =54a(2) =288a(3) =480a(4) =744a(5) =1062a(6) =1968a(7) =2616a(8) =3480a(9) =4398a(10) =6000a(11) =7344a(12) =9744a(13) =11628a(14) =14256a(15) =16632a(16) =20376a(17) =23436a(18) =27312a(19) =30984a(20) =37104a(21) =41652a(22) =47424a(23) =52776a(24) =60432a(25) =66636a(26) =75552a(27) =82752a(28) =93288a(29) =101676

External references