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)=3.
A120577
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)=3.
Terms
- a(0) =3a(1) =1a(2) =2a(3) =4a(4) =5a(5) =10a(6) =25a(7) =50a(8) =20a(9) =100a(10) =11a(11) =22a(12) =44a(13) =55a(14) =110a(15) =220a(16) =31a(17) =62a(18) =341a(19) =682a(20) =29a(21) =58a(22) =899a(23) =1798a(24) =79a(25) =158a(26) =2291a(27) =4582a(28) =37a(29) =74
External references
- oeis: A120577