Triangular spiral sequence: sequence is written as a triangular spiral, each entry is the sum of the row in the previous direction containing the previous entry.
A063177
Triangular spiral sequence: sequence is written as a triangular spiral, each entry is the sum of the row in the previous direction containing the previous entry.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =2a(4) =5a(5) =6a(6) =6a(7) =19a(8) =22a(9) =23a(10) =23a(11) =93a(12) =101a(13) =108a(14) =110a(15) =110a(16) =545a(17) =573a(18) =601a(19) =626a(20) =632a(21) =632a(22) =3719a(23) =3848a(24) =3978a(25) =4102a(26) =4218a(27) =4241a(28) =4241a(29) =28979
External references
- oeis: A063177