971504

Appears in sequences

• Main diagonal of array A[k,n] = n-th sum of k consecutive k-gonal numbers, k>2.at n=29A130424
• a(1)=1, a(n)=a(n-1)+n^1 if n odd, a(n)=a(n-1)+ n^4 if n is even.at n=23A140146