Square array read by antidiagonals: a(n, d) is the smallest number that begins an arithmetic progression with common difference d of n numbers with the same prime signature.
A113456
Square array read by antidiagonals: a(n, d) is the smallest number that begins an arithmetic progression with common difference d of n numbers with the same prime signature.
Terms
- a(0) =1a(1) =2a(2) =1a(3) =33a(4) =3a(5) =1a(6) =19940a(7) =3a(8) =2a(9) =1a(10) =204323a(11) =213a(12) =155a(13) =3a(14) =1a(15) =380480345a(16) =213a(17) =7572a(18) =3a(19) =2a(20) =1
External references
- oeis: A113456