# A069975 (b-file synthesized from sequence entry) 1 15 2 126 3 429 4 1020 5 1995 6 3450 7 5481 8 8184 9 11655 10 15990 11 21285 12 27636 13 35139 14 43890 15 53985 16 65520 17 78591 18 93294 19 109725 20 127980 21 148155 22 170346 23 194649 24 221160 25 249975 26 281190 27 314901 28 351204 29 390195 30 431970 31 476625 32 524256 33 574959