Triangle read by rows of differences of reciprocals of unity.

Terms

a(0) =1a(1) =1a(2) =3a(3) =1a(4) =11a(5) =7a(6) =1a(7) =50a(8) =85a(9) =15a(10) =1a(11) =274a(12) =1660a(13) =575a(14) =31a(15) =1a(16) =1764a(17) =48076a(18) =46760a(19) =3661a(20) =63a(21) =1a(22) =13068a(23) =1942416a(24) =6998824a(25) =1217776a(26) =22631a(27) =127a(28) =1a(29) =109584