# A061972 (b-file synthesized from sequence entry) 1 1 2 3 3 9 4 27 5 33 6 36 7 81 8 183 9 223 10 261 11 263 12 351 13 585 14 1035 15 1092 16 1173 17 1732 18 2235 19 2628 20 3492 21 8577 22 11592 23 13617 24 15663 25 20664 26 20709 27 23333 28 25848 29 52689 30 67608 31 334536 32 837112 33 2765341 34 5319444