240276domain: NAppears in sequencesa(n) = n^2*(16*n^4-20*n^2+7)/3.at n=5A002594Sum{T(n-k,k)}, 0<=k<=[ n/2 ], T given by A026703.at n=23A026713a(n) = 1^n + 3^n + 5^n + 7^n + 9^n + 11^n.at n=5A134008Recurrence a(n) = a(n-2) + n^M for M=5, starting with a(0)=0, a(1)=1.at n=11A231304