a(n) = 1 + 2*n^2 + 3*n^3 + 4*n^4 + 5*n^5 + 6*n^6 + 7*n^7 + 8*n^8 + 9*n^9.
A209275
a(n) = 1 + 2*n^2 + 3*n^3 + 4*n^4 + 5*n^5 + 6*n^6 + 7*n^7 + 8*n^8 + 9*n^9.
Terms
- a(0) =1a(1) =45a(2) =8193a(3) =250957a(4) =3029217a(5) =21362301a(6) =106420465a(7) =415866333a(8) =1358612097a(9) =3868151437a(10) =9876543201a(11) =23084307885a(12) =50147947873a(13) =102436518237a(14) =198541656657a(15) =367761728701a(16) =654820258305
External references
- oeis: A209275