Irregular array where the n-th row are the divisors, not occurring earlier in the sequence, of the sum of the terms in all previous rows. a(1)=5.

A120579

Irregular array where the n-th row are the divisors, not occurring earlier in the sequence, of the sum of the terms in all previous rows. a(1)=5.

Terms

    a(0) =5a(1) =1a(2) =2a(3) =3a(4) =6a(5) =17a(6) =34a(7) =4a(8) =68a(9) =7a(10) =10a(11) =14a(12) =20a(13) =28a(14) =35a(15) =70a(16) =140a(17) =8a(18) =16a(19) =29a(20) =58a(21) =116a(22) =232a(23) =464a(24) =19a(25) =73a(26) =1387a(27) =1433a(28) =2866a(29) =7165

External references