# A046950 (b-file synthesized from sequence entry) 0 1 1 25 2 49 3 169 4 625 5 1369 6 3025 7 7921 8 18769 9 37249 10 208849 11 3485689 12 4950625 13 7756225 14 225150025 15 48195616225 16 264353307409 17 453673643809 18 1278932548201 19 5225490897028249 20 6290436331177441 21 16712972707067569