# A087887 (b-file synthesized from sequence entry) 0 0 1 24 2 168 3 540 4 1248 5 2400 6 4104 7 6468 8 9600 9 13608 10 18600 11 24684 12 31968 13 40560 14 50568 15 62100 16 75264 17 90168 18 106920 19 125628 20 146400 21 169344 22 194568 23 222180 24 252288 25 285000 26 320424 27 358668 28 399840 29 444048 30 491400 31 542004 32 595968 33 653400 34 714408 35 779100 36 847584