Simultaneously fill a square spiral and an infinite square array by antidiagonals with distinct nonnegative integers so that the sum of numbers in any 2 X 2 square equals a square.
A353588
Simultaneously fill a square spiral and an infinite square array by antidiagonals with distinct nonnegative integers so that the sum of numbers in any 2 X 2 square equals a square.
Terms
- a(0) =0a(1) =1a(2) =2a(3) =6a(4) =13a(5) =17a(6) =3a(7) =16a(8) =32a(9) =4a(10) =63a(11) =375a(12) =20a(13) =1628a(14) =45a(15) =36a(16) =43a(17) =25189a(18) =138507681a(19) =3727222924a(20) =5a(21) =123772a(22) =1299458
External references
- oeis: A353588