Irregular triangle read by rows in which the n-th row lists multinomials for partitions of 3n which have only parts which are multiples of 3, in Hindenburg order.

A327003

Irregular triangle read by rows in which the n-th row lists multinomials for partitions of 3n which have only parts which are multiples of 3, in Hindenburg order.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =10a(4) =1a(5) =84a(6) =280a(7) =1a(8) =220a(9) =462a(10) =9240a(11) =15400a(12) =1a(13) =455a(14) =5005a(15) =50050a(16) =210210a(17) =1401400a(18) =1401400a(19) =1a(20) =816a(21) =18564a(22) =185640a(23) =24310a(24) =4084080a(25) =13613600a(26) =2858856a(27) =85765680a(28) =285885600a(29) =190590400

External references