A047112 T(n,n), array T as in A047110.
1, 1, 2, 10, 29, 91, 370, 1305, 4626, 17888, 66824, 248839, 955688, 3646596, 13892482, 53548120, 206439059, 795884541, 3083453744, 11962794031, 46444491143, 180751142106, 704383034528, 2747337971249, 10730723024786
Offset: 0