Penholodigital squares: squares containing each of the digits 1..9 exactly once.

Terms

a(0) =139854276a(1) =152843769a(2) =157326849a(3) =215384976a(4) =245893761a(5) =254817369a(6) =326597184a(7) =361874529a(8) =375468129a(9) =382945761a(10) =385297641a(11) =412739856a(12) =523814769a(13) =529874361a(14) =537219684a(15) =549386721a(16) =587432169a(17) =589324176a(18) =597362481a(19) =615387249a(20) =627953481a(21) =653927184a(22) =672935481a(23) =697435281a(24) =714653289a(25) =735982641a(26) =743816529a(27) =842973156a(28) =847159236a(29) =923187456