A055208 Table read by ascending antidiagonals: T(n,k) (n >= 1, k >= 1) is the sum of k-th powers of digits of n.

1, 2, 1, 3, 4, 1, 4, 9, 8, 1, 5, 16, 27, 16, 1, 6, 25, 64, 81, 32, 1, 7, 36, 125, 256, 243, 64, 1, 8, 49, 216, 625, 1024, 729, 128, 1, 9, 64, 343, 1296, 3125, 4096, 2187, 256, 1, 1, 81, 512, 2401, 7776, 15625, 16384, 6561, 512, 1, 2, 1, 729, 4096, 16807, 46656, 78125

Offset

1,2

Links

Table of n, a(n) for n=1..62.

Example

T(34,2) = 3^2 + 4^2 = 25.
From Georg Fischer, Mar 01 2022: (Start)
Array T(n, k) (n >= 1, k >= 1) begins:
  1,   1,   1,   1, ...
  2,   4,   8,  16, ...
  3,   9,  27,  64, ...
  4,  16,  64, 256, ...
  ...
(End)

Crossrefs

Cf. A051128. Rows include A003132, A055012, A055013, A055014. Columns include A000012, A000079, A000244, A000302, A000351, A000400, A000420, A001018, A001019, A000012, A007395, A000051, A034472, A052539, A034474.

Sequence in context: A335312 A284873 A107616 * A051128 A137614 A204213

Adjacent sequences: A055205 A055206 A055207 * A055209 A055210 A055211

Keyword

base,easy,nonn,tabl

Author

Henry Bottomley, Jun 19 2000

Extensions

Definition clarified by Georg Fischer, Mar 01 2022

Status

approved