# A033870 (b-file synthesized from sequence entry) 0 1 1 9 2 13 3 21 4 33 5 49 6 77 7 117 8 121 9 169 10 273 11 429 12 441 13 637 14 693 15 1001 16 1089 17 1521 18 1573 19 1617 20 2541 21 3549 22 5577 23 5733 24 5929 25 8281 26 9009 27 13013 28 14157 29 20449 30 21021 31 22021 32 33033 33 53361 34 74529 35 77077 36 117117 37 184041 38 198189 39 273273 40 286273