**Lower triangular matrix T, read by rows, such that the row sums of T^n form the (3n)-dimensional partition numbers.**

*1, 0, 1, 0, 3, 1, 0, 6, 3, 1, 0, 13, 9, 3, 1, 0, 24, 19, 12, 3, 1, 0, 48, 48, 25, 15, 3, 1, 0, 86*

*2 seqfan posts*

Index of A-numbers in seqfan: by ascending order by month by frequency by keyword

Links to OEIS content are included according to The OEIS End-User License Agreement .