Numbers k that have no zero digits and such that both k+1 and (product of digits of k) + 1 are squares.

A081990

Numbers k that have no zero digits and such that both k+1 and (product of digits of k) + 1 are squares.

Terms

    a(0) =3a(1) =8a(2) =24a(3) =35a(4) =168a(5) =528a(6) =624a(7) =783a(8) =1443a(9) =3843a(10) =5183a(11) =7568a(12) =8835a(13) =12543a(14) =13224a(15) =15128a(16) =17423a(17) =24335a(18) =26243a(19) =27224a(20) =41615a(21) =47523a(22) =75624a(23) =87615a(24) =92415a(25) =118335a(26) =128163a(27) =135423a(28) =172224a(29) =213443

External references