Triangle read by rows: Aitken's array (A011971) but with a leading diagonal before it given by the Bell numbers (A000110), 1, 1, 2, 5, 15, 52, ...

A095149

Triangle read by rows: Aitken's array (A011971) but with a leading diagonal before it given by the Bell numbers (A000110), 1, 1, 2, 5, 15, 52, ...

Terms

    a(0) =1a(1) =1a(2) =1a(3) =2a(4) =1a(5) =2a(6) =5a(7) =2a(8) =3a(9) =5a(10) =15a(11) =5a(12) =7a(13) =10a(14) =15a(15) =52a(16) =15a(17) =20a(18) =27a(19) =37a(20) =52a(21) =203a(22) =52a(23) =67a(24) =87a(25) =114a(26) =151a(27) =203a(28) =877a(29) =203

External references