A169886 Fourth powers (n * n * n * n) in carryless arithmetic mod 10.

0, 1, 6, 1, 6, 5, 6, 1, 6, 1, 10000, 14641, 18426, 12481, 16666, 10005, 14646, 18421, 12486, 16661, 60000, 62481, 64646, 66661, 68426, 60005, 62486, 64641, 66666, 68421, 10000, 18421, 16666, 14641, 12486, 10005, 18426, 16661, 14646, 12481, 60000, 66661, 62486

Offset: 0

Author

David Applegate, Marc LeBrun and N. J. A. Sloane, Jul 06 2010

Keywords

• nonn
• base
• look

Links

• Seiichi Manyama, Table of n, a(n) for n = 0..9999
• Index entries for sequences related to carryless arithmetic

Crossrefs

Cf. A004520, A059729, A168294, A168541, A169884, A169885.

Programs

PARI

a(n) = fromdigits(Vec(Pol(digits(n))^4)%10); \\ Seiichi Manyama, Mar 09 2023